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Question:
my girlfriend started her period on a wednesday and she is on birth controll,but also this whole week she has been on antibiotics for a cold ,and she heard from somewhere that when on antibiotics birthcontroll does not work . so on sunday we were going to be together and she didnt take her antibiotics sunday morning so the birthcontroll would work,well we had sex and we didnt use a condom we usually do use condoms but we wanted to try it with out ,i did not ejaculate in her but i am certain precum got in her,but then right after we had sex once she didnt get an orgasm so with in30seconds of me ejaculating i whiped my penis off to make sure no sperm was on it and put it back in and tried to have sex again but we were there for like 20 minutes and i wouldnt ejaculate so we stopped ,but my question to all of this is how likely is it for her to be pregnant?PLEASE RESPOND AS SOON AS POSSIBLE BECAUSE I AM DEBATING WEATHER SHE SHOULD TAKE A DAY AFTER PILL OR NOT.

Answer:
by Konstance McCaffree: ()
Joey, I'm sorry it has taken me so long to get back to you. I didn't realize that I had a question in my queue. I don't think you need to worry because even though the Pill has been found to be slightly less effective in some people when taking antibiotics, it is not completely ineffective. I'm glad you considered that you might have to take emergency contraception (though it is too late now by the time you get this message from me) but I don't think you need to be too worried. It sounds as if you didn't put too much sperm into her vagina if it was only the precum. I do hope you remember this scare and that you always use a latex condom as back up, not only for pregnancy but for any disease transmission. Taking the antibiotics is more likely to give her a vaginal yeast infection, which she could pass to you (though you would not feel any symptoms) and then you will pass back to her possibly after she has taken medication to rid her vagina of the infection. If she is worried about pregnancy, please have her take a pregnancy test so that she can get early information on it.

Reviewed by: Patricia Fawver Ph.D. in Sexology

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