Hello, i m currently taking microgestin fe 1/20 and have been regularly since October 2013. This has regulated my period very well up until last month when I completely missed my period. I always take my pills at the same time every night or at the latest two hours late but have never missed a pill. i ve been sexually active with my bf with no condoms while on the pill and the off weeks. I took two pregnancy tests while on the week I was missing my period and they both came back negative. I took them in the morning as well. this week I am supposed to be getting my period so i m alittle concerned and just wondering if this happens regularly or should I be worried?