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A 21-year-old female asked:

Miss a pill on 11/29 second day of week 3, took 2 pills the other day. had sex 11/28 the day before but took that days pill. should i be concerned about pregnancy? norethindrone acetate and ethinyl estradiol 1mg/ 0.02mg?

2 doctor answers2 doctors weighed in
Dr. Yvette Kratzberg
Pediatrics 25 years experience
Hormonal Oral Contraceptives contain hormones that regulate your menstrual cycle. Typically, when a woman misses 1-2 pills, their natural hormones take over and the protection wanes and needs to be reset. Doubling up on the pills is fine. Pregnancy is still possible. A pregnancy test will be positive as soon as the first day of a missed period.
Dr. Gurmukh Singh
Pathology 50 years experience
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.

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