chances of pregnancy after birth control?

[midnightsphinx.livejournal.com]

So I was on yasmin for two months. A little over a week ago I stopped taking it altogether. I had a period that lasted around 5 days and last night I had unprotected sex. Is it at all possible I could be ovulating and have the chance of getting pregnant? Or does it take a few months to start ovulating again after being on the pill?

*I would also like to add that I have been taking the anti biotic Doxycycline for the past 3 weeks. I don't know how much this effects the birth control...