Now january 2022 5 days ago i bled for only a hour and when i wipe it would be on there and not on the pad. now i have cramps underneath my stomach and my tummy looks pretty big and roundish. took 3 tests last week and all was negative. please help?

Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for 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. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully.