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A 20-year-old female asked:

Had unprotected sex on 21 feb,got last period on 5 feb. pregnancy test kits as tested on 18 march negative. blood test beta hcg <1.20miu. pregnant?

1 doctor answer1 doctor weighed in
Dr. Gurmukh Singh
Pathology 50 years experience
No: Based on the information you provided, you are not pregnant. It would be prudent to repeat the home pregnancy test in a week, unless you get a period by then. Conception, as defined by the generation of a fertilized ovum, occurs within day or so of the sex. However, it takes about 2-3 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.

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Last updated Mar 21, 2017

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