How many days after sex can you get a pregnancy blood test taken? I had one done 19 days after sex and a late period. Came back negative. Accurate?

Likely. 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. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine.

Related Questions

12 weeks after sex no Sprem involved. My period keeps coming light bleed and for 3 days. Took pregnany test blood test came negative. No late period?

Not pregnant. You are having periods. You did not have sperm inside of the vagina. You cannot possibly be pregnant. Why would you let your brain get to the point you are not thinking clearly? You are having an irregular period. If you are truly worried about it then you go to the doctor. You are not pregnant. Take that off the list of causes of your symptoms. Read more...