Most Indian couples we speak to at Cosma start the same way. They stop using contraception, assume pregnancy will happen quickly, and when it does not happen in three or six months, they enter a quiet, anxious phase of not knowing whether to keep waiting or start asking questions.

This article is the timeline we wish someone had handed those couples on day one. It is not medical advice for your specific case that comes from your doctor, but it is the framework we walk our own community through.

How long does it actually take to conceive?

For couples under 35 with no known fertility issues, conception typically happens within 12 months of trying. For couples where the woman is 35 or older, that window narrows to about 6 months. These are population-level patterns, not promises.

Importantly, conceiving in the first month is not the norm — it is the exception. The probability of conception in any single cycle, even for a healthy young couple, is roughly 20–25%. That means most couples will not conceive in their first cycle, and that is not a sign of a problem.

The fertility timeline by age

If you are under 30

Try for up to 12 months before seeking a fertility evaluation, unless you have known issues — irregular periods, PCOS, endometriosis, prior pelvic surgery, or your partner has a known sperm issue. In those cases, see a specialist sooner.

During this 12-month window, focus on the basics: identify your fertile window, time intercourse around it, and address obvious lifestyle factors like smoking, alcohol, weight and sleep.

If you are 30–34

The 12-month rule still applies, but with one caveat: do not coast through the full 12 months passively. Use the first three months to map your cycle, the next three to track ovulation actively, and if six months in you have not conceived, get a baseline assessment. You are not panicking — you are being informed.

If you are 35–37

Drop the threshold to 6 months. Female fertility starts to decline more steeply after 35, and the value of an early baseline test is much higher. AMH (which reflects ovarian reserve), TSH, prolactin and a semen analysis for your partner are reasonable starting points.

If you are 38 or older

Do not wait. Speak to a fertility specialist within the first 3 months of trying, and consider a baseline fertility panel right at the start. This is not because something is wrong; it is because time itself is the variable that matters most at this stage.

Signs you should not wait, regardless of age

• Irregular cycles (cycles shorter than 21 days or longer than 35 days).
• Cycles that have always been painful or extremely heavy.
• A diagnosis of PCOS, endometriosis, fibroids or thyroid disorder.
• Prior pelvic infections, pelvic surgery or ectopic pregnancy.
• Two or more miscarriages.
• A partner with a known sperm parameter issue, or a history of testicular surgery / Mumps in adolescence.
• You are simply tired of wondering.

What a baseline fertility test actually involves

A baseline fertility assessment in India is not as intense as people imagine. For the woman, It usually means a blood draw on day 2 or day 3 of the cycle for AMH, FSH, LH, estradiol, TSH and prolactin, plus an ultrasound to look at the ovaries and uterus. For the man, it is a single semen analysis. Most of this can be done at home or at a partner lab, with reports back in 2–3 days.

What if results are normal but you are still not conceiving?

This is more common than people think. "Normal" results mean no obvious red flag — they do not mean your fertile window is being used optimally, your stress levels are supporting conception, or your timing is right. This is the zone where structured cycle support, lifestyle work and a clear fertile-window protocol often make a difference.

The conversations you should have with your partner

• "Are we both willing to get tested at the same time, instead of one of us going first?"
• "What is our timeline for re-evaluating where we are?"
• "What does "trying" actually look like for us, in terms of timing and effort?"
• "How do we want to handle this emotionally if it takes longer than we hoped?"

The bottom line

There is no universal "right" amount of time to try. There is only your age, your context, your medical history, and the conversations you and your partner are willing to have. The single most consistent regret we hear at Cosma is from couples who waited longer than they had to before getting a baseline test. We have rarely heard the opposite.

If you are not sure where you stand, our free FertiLens assessment takes two minutes and gives you a personalized recommendation for what to do next.