I've been feeling very sick to my stomach for the past week and not really sure why, lately I just haven't been living the healthy life I know that, drinking alcohol, eating junk, kind of gaining weight in my stomach area and just been at home most of my time laying in bed (suffer from depression and anxiety)... One week ago I had unprotected sex but I've been on birth control for years, still the next day I took a plan b and went back to taking my pills as always, but for the past week I've been very nauseous feeling to throw up but haven't, lots of headaches, feeling very weak and drained, not getting any sleep, turning and twisting in bed, I just don't feel like myself at all.. Know anything that can be the problem? Pregnancy maybe? Or just getting sick with a virus or something? Or my body failing on me now?