10 Reasons for Not Getting Pregnant

How Long Does It Usually Take to Get Pregnant?

There is no fixed timeline for getting pregnant. Even when there is no known fertility problem, conception may take several months. For people aged 35 or under who have regular unprotected intercourse every 2 to 3 days, pregnancy is likely to happen within a year. Having intercourse around the fertile window can also improve the chances of conception.

Age is another important factor. Female fertility gradually declines with age and the decline becomes more noticeable in the later reproductive years. This is why the recommended time to seek a fertility evaluation changes with age.

If pregnancy has not happened after several months of trying, it does not automatically mean that something is seriously wrong. However, the length of time you should continue trying before getting evaluated depends on your age, medical history and any known fertility concerns.

10 Reasons for Not Getting Pregnant

There is rarely one single explanation that applies to everyone. These are some of the common reasons why pregnancy may not happen as expected.

1. Problems with ovulation

Ovulation is the release of an egg from the ovary. For pregnancy to occur naturally, an egg needs to be released so that it can meet sperm. If ovulation does not happen regularly, the chances of conception can decrease. Irregular or absent periods can sometimes be a clue, although ovulation problems are not always obvious.

Conditions such as PCOS, thyroid disorders, significant weight changes and some other hormonal problems can affect ovulation.

2. Age-related changes in fertility

Age can affect fertility in both men and women, but the effect is particularly important for female fertility. As women get older, both the number of eggs remaining in the ovaries and egg quality change. This can make conception more difficult and can also increase the risk of miscarriage.

This does not mean that pregnancy is impossible at an older age. It simply means that age is an important part of understanding fertility and deciding when an evaluation may be useful.

3. Male factor infertility

Difficulty getting pregnant is not only a female fertility concern. Sperm-related factors can contribute to infertility, either on their own or along with a female factor. A semen analysis can check things such as sperm count, movement and shape. Low sperm count, reduced motility and certain other sperm abnormalities may make it harder for sperm to reach and fertilise an egg.

This is why fertility evaluation is generally recommended for both partners, rather than focusing only on the woman.

4. Blocked or damaged fallopian tubes

The fallopian tubes provide the pathway for the egg and sperm to meet. If one or both tubes are blocked or damaged, this can interfere with fertilisation or the movement of the fertilised egg towards the uterus. Previous pelvic infections, certain surgeries, endometriosis and other conditions can affect the tubes.

Tests such as hysterosalpingography (HSG) or other tubal assessment methods may be recommended to check whether the fallopian tubes are open.

5. Endometriosis

Endometriosis occurs when tissue similar to the lining of the uterus grows outside the uterus. It can affect the ovaries, fallopian tubes and other pelvic structures. Some women with endometriosis may experience pelvic pain or painful periods, while others may have few obvious symptoms. Depending on its severity and location, endometriosis can affect fertility.

If there is a history of severe period pain, pelvic pain or other symptoms suggestive of endometriosis, it may be worth discussing them during a fertility consultation.

6. Conditions affecting the uterus

The uterus needs to provide a suitable environment for an embryo to implant and continue developing. Some uterine conditions, including certain fibroids, polyps or adhesions, may affect fertility. However, not every uterine abnormality prevents pregnancy. Its location, size and effect on the uterine cavity matter.

An ultrasound or other imaging may be used during a fertility evaluation when a uterine problem is suspected.

7. Reduced ovarian reserve

Ovarian reserve refers to the number of eggs remaining in the ovaries. Tests such as AMH and antral follicle count can provide information about ovarian reserve and may help doctors plan fertility treatment. But there is an important point here: a low AMH level or reduced ovarian reserve does not automatically mean that a woman cannot get pregnant.

Ovarian reserve tests are interpreted along with age, medical history and other fertility findings. They are useful for treatment planning but should not be treated as a standalone test of whether someone can conceive naturally.

8. Hormonal or other medical conditions

Several health conditions can affect fertility. Thyroid disorders, problems with prolactin, PCOS and certain other hormonal conditions may interfere with ovulation or the menstrual cycle. Some medications and previous medical treatments can also affect reproductive function.

This is why your doctor may ask about your periods, previous illnesses, surgeries, medications and overall health during a fertility evaluation. Looking at the complete history can sometimes reveal an issue that is not obvious from symptoms alone.

9. Timing or sexual factors

Sometimes the issue is not a medical condition but simply that intercourse is not happening during the fertile part of the cycle. For example, in a 28-day menstrual cycle, ovulation often occurs around day 14, so the fertile window may roughly fall around days 9–14. However, this fertile window varies from person to person and from cycle to cycle. Having intercourse every 1 to 2 days during the fertile window can help maximise the chance of conception.

Sexual difficulties, including problems with intercourse or ejaculation, can also make conception more difficult and should be discussed openly with a doctor if they are affecting attempts to conceive.

10. Unexplained infertility

Sometimes fertility tests come back without showing a clear reason for the difficulty conceiving. This is known as unexplained infertility. It does not mean that pregnancy is impossible. It means that standard fertility tests have not identified a specific cause.

Typically, the evaluation has looked at factors such as ovulation, the fallopian tubes and semen. Depending on the couple’s age, medical history and how long they have been trying, a doctor may then discuss treatment options.

Other Factors That May Affect Your Chances of Getting Pregnant

Medical conditions are not the only things worth looking at when you are trying to conceive. Everyday habits and personal circumstances can also play a role.

• Smoking, recreational drug use, high alcohol intake and some lifestyle factors may affect fertility.
• Weight that is significantly above or below a healthy range can also affect ovulation in some women.
• In men, certain health and lifestyle factors such as heavy alcohol use, obesity, anabolic steroid use and repeated exposure to high temperatures can affect semen quality.
• Stress is often mentioned when someone is not getting pregnant. However, it is too simplistic to say that stress alone causes infertility. Stress can affect overall wellbeing and, for some people, may influence sexual frequency, sleep or other behaviours that matter when trying to conceive.

If you have been trying for some time, it is better to look at these factors as part of the bigger picture rather than blaming yourself for not getting pregnant.

When Should You See a Fertility Specialist?

A fertility evaluation is generally recommended:

• After 12 months of trying if the woman is under 35.
• After 6 months of trying if the woman is 35 or older.
• Earlier than this if there are known or suspected fertility concerns.

You may also want to seek an evaluation earlier if you have irregular or absent periods, a history of endometriosis, previous pelvic infection or surgery, known uterine or tubal problems, previous fertility treatment, suspected male-factor infertility or another medical condition that could affect fertility.

For women over 40, a more immediate evaluation may be appropriate. The purpose of an evaluation is not simply to put a label on the problem. It is to understand what may be affecting conception and decide whether any treatment or further testing is needed.

How Is Infertility Diagnosed?

There is no single test that can explain every case of infertility. A fertility evaluation usually starts with a detailed medical and reproductive history and then uses tests based on the findings.

Depending on the individual situation, evaluation may include:

• Medical and reproductive history: This may cover menstrual cycles, previous pregnancies, miscarriages, surgeries, infections, medications and family history.
• Ovulation assessment: Menstrual history can provide useful information about ovulation. Additional testing may be recommended when ovulation is uncertain or irregular.
• Hormonal testing: Tests may be recommended based on the person’s symptoms and medical history.
• AMH and ovarian reserve assessment: AMH, antral follicle count and other tests may be used to assess ovarian reserve and help with treatment planning. A low ovarian reserve result does not by itself mean natural pregnancy is impossible.
• Ultrasound: A transvaginal ultrasound can provide information about the ovaries, uterus and pelvic structures.
• Fallopian tube evaluation: HSG or another appropriate test may be used to check whether the fallopian tubes are open.
• Semen analysis: This checks important semen and sperm parameters and is an important part of evaluating the male partner.

Not everyone needs every test. The evaluation should be based on the individual’s history and clinical findings.

Can Difficulty Getting Pregnant Be Treated?

In many cases, yes. But the right treatment depends on why pregnancy is not happening, along with factors such as age, ovarian reserve, sperm parameters, how long the couple has been trying and previous treatment.

Depending on the situation, treatment may include lifestyle changes, medicines to address an underlying condition, ovulation induction, surgery for certain problems, IUI or IVF. ICSI may be considered in situations where there is a significant male factor or a previous fertilisation problem. For example, someone with an ovulation problem may need a very different approach from someone with blocked fallopian tubes or severe male-factor infertility.

That is why it is better not to choose a fertility treatment based only on a single test or someone else’s experience. A proper fertility assessment can help determine which options are appropriate.