It doesn't sound like to me that you could be pregnant since you have had two tests and a menstrual cycle. I would contact a doctor to see what is going on with your hormones. Also, some women's PMS symptoms change through the years. When was your last cycle? Could you perhaps be going through PMS now with different symptoms? I never had any symptoms of PMS, other than cramps, no bloating, irritability, mood swings, etc. NOW, OH MY GOSH - it is the worst, but I am older and think I am probably perimenopausal.