A member asked:

Period began 6/13 end 6/17 (periods usually last 4-5days) cycle length usually 25 days. sex on 7/2( i think i was ovulating that day) took aftera(plan b) on 7/3. took test 7/8 and it's negative. period due 7/9/ or 7/10. possibly pregnant?

A doctor has provided 1 answer

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.

Answered 7/9/2021

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