Birth Control/ Pregnancy?!
Question: I'm on birth control and take it religiously every morning. I had sex on saturday and I was supposed to start my period on Monday. Earlier this month I was on antibiotics and being that I was done with them, I didn't think that they would still decrease the effectiveness of my pill, but I read that it can decrease it for the remainder of the pack.
So my questions are
1) How much can antibiotics decrease the effectivness of birth control
and
2) Even if my birth control wasn't effective, What is the likelyhood of getting pregnant two days prior to your period?
Thank your for your time, and i'll award 10 pts to best answer.
Answers: I'm on birth control and take it religiously every morning. I had sex on saturday and I was supposed to start my period on Monday. Earlier this month I was on antibiotics and being that I was done with them, I didn't think that they would still decrease the effectiveness of my pill, but I read that it can decrease it for the remainder of the pack.
So my questions are
1) How much can antibiotics decrease the effectivness of birth control
and
2) Even if my birth control wasn't effective, What is the likelyhood of getting pregnant two days prior to your period?
Thank your for your time, and i'll award 10 pts to best answer.
Hi! Well the worst anti-B's for altering BCP are the Penicillins, and also Tetracycline. Drugs like Cipro, do not show any real affect on BCP. I'm not sure what you were on.
Yes, anti-B's can affect the whole pack of BCP, but the window in which you had sex seems unlikely to conceive. Not to say that it would not happen ever, but unlikely.
My conclusion is that this is a glitch, and there is some other reason you are not starting? If you have no period by Sunday, I would take a home pregnancy test with high sensitivity. (Answer Early or First Response Early Detection)
Hope this helps.
1) yes they can decrease them by a lot
2) you will not get pregnant 2 days before your period the time to get pregnant is 2 weeks after your period
depends on your ovulation cycle.
well, they probably wouldn't have decresed your birth control too much. also it depends on how long you have been on the pill. most likely your just late. but you still might want to get checked out just incase. i hope everything goes well.
your period may be late just because it is you might not be preggers so dont stress go get a pregnancy test and worry if your preggers. i wouldnt thik that antibiotics would decrease the effectiveness of birth control . if you still continued with b.c and the antibiotics
your being way to cautious, what for your period to come. it doesn't always begin on the same day of every month. lol you'll see. and if your worried about getting pregnant will using birth control, cause its not 100% affective anyways, why don't you use a condom too?
Antibiotics can affect BCPs considerably, which is why a back up method is always recommended.
The likelihood of becoming pregnant 2 days before your period is due is slim to none. If you were to ovulate (and this depends on the BCP you are on) then it would happen 14 days prior to the onset of your next period (unless you have a luteal phase defect, making it longer or shorter, though your luteal phase would not be THAT short, 2 days).
My recommendation is to always use a backup method when on antibiotics, and to do some research on how the female cycle works (it always amazes me how little women/girls know about their body).
This is copy pasted right of a site, posted below, but i have done some research for my GF on this subject and the general consensus in the medical community is usually about the same. They have those disclaimers on the pack and some websites because they dont want to be sued over something like that, but the affects of the a-biotic on b-control is usually done after a week or two. Of course, its always better to just wear a condom in this situation.
As for the second part of the question, sperm CAN stay alive for that length of time, although they will be tired and arent very likely to make it through the egg. I dont know an actual percentage but I do know that it isnt very high.
If you are personally in this situation, it might be a good idea to have a morning-after pill handy in the medicine cabinet or whatever if you do decide to skip wearing a condom, just in case.
Hope this helps!
Can antibiotics decrease the effectiveness of birth control pills?
The effects of antibiotics on birth control pills may be overstated