You should wait at least 4 to 7 days after implantation bleeding before taking a pregnancy test to improve accuracy. Testing too soon, such as 1 day after implantation bleeding, may result in a false negative because hCG hormone levels might not be high enough to detect yet

. Implantation bleeding typically occurs about 6 to 12 days after ovulation, close to when your next period is due, and the hormone hCG starts to be produced after the fertilized egg attaches to the uterine lining

. Some highly sensitive pregnancy tests allow testing up to 5 days before a missed period, but even then, early testing can yield false negatives, so waiting a few days after implantation bleeding or after a missed period is best for reliable results

. In summary:

• Implantation bleeding happens roughly 6-12 days after ovulation.
• Wait at least 4-7 days after implantation bleeding before testing.
• For most accurate results, testing after a missed period is recommended.
• If testing early and negative, retest after 3 days as hCG rises quickly in early pregnancy

This approach helps ensure the pregnancy test can detect sufficient hCG levels for an accurate positive result.