Ovulation, Fertility and Pregnancy Tests: A Guide for Women Trying to Conceive

For many couples, the months after deciding to start a family bring a mix of hope and worry. When does a woman ovulate? When should a pregnancy test be done? And how long is it normal to wait? Understanding how the cycle works takes much of the guesswork and anxiety out of trying to conceive.

How the cycle works

A woman’s menstrual cycle counts from the first day of one period to the first day of the next. It averages 28 days but anywhere from 21 to 35 days is normal. Ovulation, when an ovary releases an egg, usually happens about 14 days before the next period starts, not necessarily on day 14. The egg survives about 12 to 24 hours, while sperm can live up to five days in the body. So the fertile window is roughly the five days before ovulation and the day of ovulation itself.

How to know when you are ovulating

• Cycle tracking: note period start dates for a few months. In a regular 28-day cycle, the fertile window falls around days 10 to 15.
• Cervical mucus: becomes clear, stretchy and slippery, like egg white, around ovulation.
• Ovulation predictor kits (OPK): urine strips that detect the hormone surge (LH) that comes about 24 to 36 hours before ovulation.
• Basal body temperature: a slight rise after ovulation. It confirms ovulation has happened but does not predict it.
• Mild one-sided lower abdominal pain or light spotting in mid-cycle can occur in some women.

Having sex every one to two days during the fertile window gives the best chance. There is no need for strict timing or stress, since regular intercourse through the month works well for most couples.

When to take a pregnancy test

• Home urine tests detect the pregnancy hormone hCG. For the most reliable result, test on or after the first day of a missed period.
• Some sensitive tests can show positive a few days earlier, but a negative early test may be a false negative. If the period still does not come, repeat after 3 to 7 days.
• Use the first urine of the morning, when hCG is most concentrated, and follow the instructions on the pack.
• A blood test (beta hCG) at a lab is more sensitive and can confirm pregnancy sooner.
• A faint second line usually means a positive test. Confirm with a doctor.
• Pain, bleeding or one-sided abdominal pain with a positive test needs urgent assessment to rule out an ectopic pregnancy.

How long is normal to wait?

About 8 out of 10 healthy couples conceive within a year of regular, unprotected intercourse. See a doctor if:

• You are under 35 and have not conceived after 12 months
• You are 35 or older and it has been 6 months
• You are over 40, or know of fertility concerns, earlier
• Your periods are very irregular, absent or extremely painful

Fertility is a couple’s issue. About a third of cases involve the woman, a third the man, and a third both or unexplained. Men should have a semen analysis at the same time as women are assessed.

Common reasons for delay

• PCOS, the leading cause of irregular ovulation
• Thyroid disease, both underactive and overactive
• Blocked fallopian tubes, endometriosis and fibroids
• Low sperm count or poor sperm movement
• Age: egg quality and number fall after 35
• Obesity, being underweight, smoking and heavy caffeine
• Poorly controlled diabetes

Preparing for pregnancy

• See your doctor before you start trying, especially if you have diabetes, high blood pressure, thyroid disease, epilepsy or take regular medicines. Never stop prescribed medicines by yourself.
• Start folic acid before conception and continue it into early pregnancy to reduce the risk of birth defects of the baby’s spine and brain. Your doctor will advise the right dose.
• Eat a balanced diet, keep a healthy weight, be active and sleep well. Check for anaemia and vitamin D deficiency.
• Stop smoking and avoid alcohol. Men should stop smoking too, as it affects sperm.
• Check that vaccines are up to date, including rubella and MMR before pregnancy.
• Be careful with online “fertility boosters” and herbal pills. Many are unproven.

Fertility treatment

After tests (hormone profile, ultrasound, tube test and semen analysis), treatment depends on the cause. It may include lifestyle changes, ovulation-inducing medicines such as letrozole or clomiphene, treatment of PCOS or thyroid disease, IUI, or IVF. These need specialist supervision and monitoring by ultrasound, since taking such medicines without scans can cause multiple pregnancy or ovarian overstimulation.

Key takeaways

• Ovulation occurs about 14 days before your next period. The fertile window is about six days.
• Test for pregnancy from the first day of a missed period, and repeat if negative and the period still does not come.
• See a doctor after 12 months of trying (6 months if over 35), or earlier if cycles are irregular.
• Start folic acid and get a health check before pregnancy. Treat the man and woman together.

Related medicines on Medimart

• Folic acid: recommended before and in early pregnancy
• Letrozole and clomiphene: ovulation-inducing medicines, only under specialist supervision
• Inositol: a supplement some women with PCOS use
• Progesterone: prescribed by gynaecologists in selected cases

Browse fertility and PCOS products and pregnancy care products on Medimart, delivered across Pakistan. Prescription medicines are supplied only against a valid prescription.

This guide is for general information and does not replace advice from a doctor.