Hi, I have used Ortho tri lo for a year now and started using Metronidazole for 7 days for bacteria vaginosis while I was on my inactive pills. My partner's condom broke and I got worried and took Plan B. My question is can I take the next active pill on Sunday after my period starts? Am I still fully protected since I have taken the pill over a year now? Does this type of antibiotics increase your chance of getting pregnant? Thank you so much.