Conceiving naturally, and when IVF is not the first answer

How long to try before seeking help

The standard advice is twelve months of regular unprotected intercourse before investigation, and six months if the woman is over 35. Those thresholds assume nothing else is wrong. Come sooner - now, in fact - if periods are irregular or absent, if there is known endometriosis, PCOS, previous pelvic surgery or pelvic infection, if there have been two or more miscarriages, if the male partner has had mumps orchitis, undescended testis, chemotherapy or a testicular injury, or if the woman is over 38.

Waiting is a legitimate plan when the tests are normal and time is on your side. It stops being a plan when it is a way of avoiding the conversation.

Timing, and what the fertile window really is

The fertile window is the six days ending on the day of ovulation, and the highest chance falls on the two days before it. Intercourse every two to three days across the cycle covers the window without requiring anyone to track anything, and for most couples that is better advice than an ovulation kit, because it removes the pressure that turns conception into a scheduled task.

Lubricants matter more than people expect - many common ones impair sperm motility. If one is needed, use a product specifically labelled as sperm-friendly.

What is checked before anything is prescribed

• Whether ovulation is happening - cycle history, and a mid-luteal progesterone where it is in doubt.
• Thyroid function and prolactin, both common, both correctable, both able to stop ovulation on their own.
• A semen analysis, done properly and repeated if abnormal. Roughly half of couples have a male contribution.
• Tubal patency by HSG or HyCoSy, before any treatment that assumes the tubes are open.
• A pelvic ultrasound for fibroids, polyps, endometrioma and ovarian reserve.
• Rubella immunity, and folic acid started before conception rather than after a positive test.

Ovulation induction, and where letrozole fits

For women with PCOS who are not ovulating, letrozole is now the first-line drug. Randomised evidence shows higher ovulation and live birth rates with letrozole than with clomiphene citrate in this group, and it is the recommendation in current international guidance. Cycles are monitored on scan, because the point of induction is one or two follicles, not five - unmonitored induction is how avoidable twin and triplet pregnancies happen.

Where insulin resistance is present, metformin and weight reduction are part of the same conversation. In women with PCOS and a raised BMI, a loss of five to ten per cent of body weight restores ovulation in a meaningful proportion without any drug at all.

Intrauterine insemination: who it actually helps

IUI is reasonable in unexplained infertility, mild male factor and cervical factor, provided at least one tube is open and the sperm count after preparation is adequate. It is usually offered as a course of three to four cycles with ovarian stimulation, and if it has not worked by then, continuing rarely helps. It is not appropriate for blocked tubes, severe male factor, or advanced maternal age with low reserve, where it mainly costs time that is not available.

Weight, smoking, alcohol, sleep and heat

These are not a substitute for treatment, and no one should be told to fix their lifestyle and come back in a year. They do change outcomes at the margin, and some of them change it considerably.

• Smoking lowers fertility in both partners and brings menopause forward; stopping is the single highest-value change either of you can make.
• A BMI well above or well below the healthy range disturbs ovulation, and correction restores it in many women.
• Heavy alcohol affects both sperm and cycles. Moderate intake matters less than the internet suggests.
• Heat exposure of the testes - long hot baths, laptops on the lap, prolonged driving - lowers sperm quality, and the effect reverses over about three months.
• Anabolic steroids and testosterone supplements shut down sperm production, often for many months. This is a common and entirely reversible cause seen in men who were never told.
• Short sleep and untreated obstructive sleep apnoea affect testosterone and semen parameters.

On supplements, diets and detoxes

Folic acid before conception is established and non-negotiable. Vitamin D is worth correcting if deficient. Beyond that, the evidence for fertility supplements in either partner is thin, and no diet, cleanse, herbal preparation or device cures infertility. Under the Drugs and Magic Remedies Act 1954 it is an offence in India to advertise a cure for infertility, and there is a reason that law exists. If a product is being sold to you with a promise, the promise is the product.

When IVF becomes the right step

IVF stops being the last resort and becomes the correct first choice when the tubes are blocked, when the male factor is severe enough to need ICSI, in significant endometriosis with a poor reserve, where age and reserve mean there is little time to spend on lower-yield options, or after IUI has been given a fair run. Being told this early and plainly is kinder than being walked through treatments that were never going to work.