How late into pregnancy could your pregnancy tests results still come back negative?

You should wait to test at least 14 to 16 days after ovulation. However some women don't get accurate readings because they don't know when they ovulated, they ovulated late, or implantation was late. Most women are able to get an accurate home pregnancy test in 4 to 8 weeks of pregnancy. If you get negative home test and still feel that you may be pregnant you should see a Dr for a blood test as it can detect pregnancy much sooner.