I was on TRI sprintec for a couple of months, took a break then switched to microgestin. I didn't get my period the first pack probably because of the switch. I had sex for the first time the first week of my second pill pack. I take my pills everyday with some days a few hours late. we didn't use a condom at first but not for a long time, he put the condom on at the end so he didn't finish inside me. my next period was only light brown and lasted 4 days. still not sure if I'm just adjusting to the pill since it's only the second month.. now I feel like I'm having symptoms of pregnancy but I think it's all in my head like breast and back soreness. I've been very stressed out so I'm not sure if it's making it worse. thoughts?