Core answer:
Most doctors can confirm pregnancy with a test as early as about 6 to 8 days after ovulation (blood test) or around the time of a missed period (urine test). Many home tests are reliable starting from the first day of a missed period, but earlier tests can be less accurate. If there’s any doubt, a repeat test a few days later or a blood test at the clinic can provide a definitive result. Details by method

• Blood tests (hCG): Detect pregnancy earlier and with high accuracy. They can identify very low levels of hCG, sometimes as early as about 6–8 days after ovulation (depending on implantation timing) and are over 99% accurate when done correctly. They can differentiate between early pregnancy and other conditions. If you’re testing very early or have risk factors, your clinician may order both qualitative and quantitative hCG tests and may repeat them to track rising levels [reliable early detection; timing varies by individual].
• Urine tests (home or clinic): Most are designed to be used from the first day of a missed period and are quite accurate then. Some highly sensitive tests claim earlier detection, but results may be less reliable the closer you test to ovulation or implantation. If a test is negative but pregnancy is still suspected, retesting a few days later or using a blood test can help [typical practice and accuracy considerations].
• Symptoms and timing: Early signs (e.g., fatigue, breast changes, mild cramping) can appear before a positive test, but they are not definitive. The best confirmation comes from hCG testing in blood or urine, followed by a pelvic exam if needed for obstetric care planning.

What to do next

• If you think you might be pregnant, take a pregnancy test:
  • If you miss your period, use a urine pregnancy test. If negative but suspicion remains, test again after 3–5 days or consult your clinician.
  • If you need earlier confirmation or have risk factors (bleeding, pain, IVF, or uncertain dates), request a blood test at a clinic or lab.
• If positive: schedule an initial prenatal visit as advised by your healthcare provider to confirm the pregnancy and begin prenatal care.
• If negative but pregnancy is still suspected (e.g., very early post-ovulation), consider repeating the test in a few days or choosing a blood test for earlier detection.

Notes

• Timing can vary by individual due to implantation timing, cycle length, and test sensitivity.
• If you’re using a test for medical decisions or pregnancy planning, a healthcare professional can provide the most reliable guidance based on your situation.