Can I have unprotected sex while on B.C. if antibiotics I took made my period come early?

I took antibiotics from June 12-June 26 for a sinus infection. This caused my period to come about two weeks early. I am now off the antibiotics and am no longer on my period and have two pills left in this cycle of "on" pills until my period is expected (though since it came early I'm not expecting it). What I am wondering is whether if I have sex with my boyfriend -- no condom -- is my birth control going to be as active/effective as if I had never taken the antibiotics and my period had not come early?





I REPEAT: I am NO LONGER on antibiotics (it's been nearly a week since I took the last one) and am on my "on" birth control pills.

Can I have unprotected sex while on B.C. if antibiotics I took made my period come early?
I believe that you need to wait until you start the next active pills before you can have sex without added protection. I would call the doctor to be sure, but I think that it's the timing of the pills that you need to worry about instead of your cycle. You may also get a second light period this month.
Reply:The best way to know you're protected is to wait until you and your boyfriend are married.
Reply:You should be fine but...for extra protection, why not use a condom too.
Reply:Yes you can. An early period means there was interaction with the antibiotics, but no more antibiotics means no more interaction and the protection becomes normal again. Take your pills everyday and forget none.
Reply:it is recommended that you use a backup for the time you are on the antibiotics plus the 7 days after...however some also recommend you use backup for that whole cycle of pills.
Reply:You need to continue to use a back up form of contraceptive such as condoms while you are taking antibiotics and until you have had seven days in a row of active pills AFTER the last antibiotic tablet. If the seven days would take you onto your hormone-free sugar pills then you need to start a new pack of active pills instead of taking the sugar pills.





The antibiotics prevent the hormones from being absorbed properly, so the level of hormones in your body drops, triggering breakthrough bleeding. You will have more bleeding when you take the sugar pills (if you take them this month.) You would have less chance of pregnancy if you skip your period by starting a new pack instead of taking the sugar pills this month.