I finished taking 5-day antibiotics for bronchitis(sp?) on 11/2 and had my period a day early (11/4), but I was taking these antibiotics on the placebo week. I've been on Tri-Sprintec for almost 2 years.

I continued taking my bc pills regularly and I had intercourse on 11/28, but the condom slipped off!

I was supposed to have my period either 12/3 or 12/4 (today), I've had the usual period headache and period smell, but the only have a lot of brown discharge (I only see a little the day before my period).

I don't think I'm pregnant, but does the effectiveness of the pill come back after 2 weeks or am I wrong?