I've been on the pill and have been taking it faithfully for a long time now. Lately, I've been diagnosed with H-pylori and I have to take a course of antibiotics now. (Such as doxycyc mono, metronidazol, and pantoprazol) Without thinking about the effectiveness it would have on my birth control I took the medication right away. I only had unprotected sex the day before I took the medicine. My concern is if there is a huge chance of me becoming pregnant. I only had 2 hormonal birth control pills left in my pac once I started taking the antibiotics and I took them. Help?