You can usually take a home pregnancy test from the first day your period is late , but the result becomes more reliable if you wait a few days to a week after the missed period. Most over‑the‑counter tests are about 99% accurate when used at the right time and exactly as directed.

Quick Scoop

  • If your cycles are regular, you can test on the day your period is due or the day after it’s missed.
  • For the most accurate result, many clinicians and guides suggest waiting about 7 days after a missed period so your hormone (hCG) level is high enough to detect.
  • If you do not know when your period is due, test at least 21 days after unprotected sex.
  • A negative test but ongoing pregnancy symptoms? Retest after a few days or see a healthcare provider for a blood test, which can detect lower hCG levels.

Why timing matters

  • Pregnancy tests detect the hormone hCG , which rises after implantation and may take 12–15 days after fertilisation to reach detectable levels in urine.
  • Testing too early can lead to a false negative , because hCG has not built up enough yet, even if you are pregnant.

Best way to take the test

  • Use first‑morning urine when possible; it is more concentrated and can make early pregnancy easier to detect.
  • Follow the instructions on the box carefully, check the expiry date , and read the result only within the time window stated to avoid mistaking evaporation lines for positives.

When to repeat or seek help

  • If your test is negative but your period still does not come after a week , repeat the test in a few days.
  • If you get mixed results (one positive, one negative), or your period is late for several weeks , contact a doctor or clinic for a blood test and further evaluation.

Bottom line: As soon as you miss your period, you can test; waiting a few extra days to a week after the missed period gives you a much more confident answer.

Information gathered from public forums or data available on the internet and portrayed here.