Losing my mind

I feel like I am going crazy. My nipples are sore, tender breast in general, I am constantly nauseous and tend to actually get sick a lot. (Like actually to the point I have to stop the car multiple times while trying to deliver my papers.) I'm having headaches a lot, drinking sodas I cant normally stand (rootbeer with vanilla added or vanilla coke), and have been craving potatoes and sausage with onions. (Onions have always been repulsive to me, cannot stand them at all. In fact it made me sick the other day when some was being cooked in the kitchen, but when the food was done, I wanted it so bad.) What the hell is wrong with me ladies? Do I dare think it's possible that maybe, just maybe it's my time for a positive?