Related Questions

If a qualitative blood pregnancy test is done three weeks after a sexual encounter and done correctly can you trust the results if they are negative?

Depends on cycles. Depends on how regular (or not) your menstrual cycles are. Pregnancy tests are reliable a few days before the expected period, so you could do one then. If you have no idea when your next period will be, then testing about 3 weeks after intercourse would be a good guess. Hopes this helps. Read more...

Blood pregnancy test 7 days after intercourse and 8 days before period. Will the results be reliable??

No, too soon to test. Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about two weeks for the embryo to make enough HCG to produce a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. Read more...

My period is 18 days late, I took a blood pregnancy test at 7 days late and it was negative. What so you think could be?

Pregnancy or..... Pregnancy may be the most common reason. Other reasons include hormone imbalances (polycystic ovary syndrome, thyroid disease, pituitary problems, eating disorders). Sometimes caused by stress, but don't assume that's it. See your doctor. Read more...

Will a blood pregnancy test 16 days after sex be accurate?

Missed Period. Probably if you have also missed a period. If you have not missed a period yet you tested too soon. Read more...