My menstrual cycles are always normal, but in April I stopped taking birth control. In May I had my period like normal, but June it didn't show up, so I took a pregnancy test and it came back negative. This month it hasn't showed up yet either and is starting to worry me. One day in the cycle I will get a migraine, then a day of cramps, nausea and bloating. I usually have PMS too and none of those symptoms appear.