Last Sunday I began taking oral birth control to regulate my period. I started taking them without using the typical start times because my period was already 2 weeks late, so I needed to get myself back on schedule. But, yesterday I started having brownish red discharge and today I am passing blood clots whenever I use the restroom and have red blood whenever I wipe. I don't think I could be pregnant because I have never had my pants off around a guy. The most I've done is make out while straddling the guy, but we were both clothed. Also, my stomach is hurting when I move, it feels kind of like I pulled a muscle or something... Is this normal? I did take my pill an hour late last night because I forgot, but other than that I have been taking them within 30 minutes of 8:00 every evening. Is something wrong with me? Or is this just something that happens commonly...