Anyone have this problem?!?!

I’ve gained 9 pounds (I have a really fast metabolism and this isn’t normal, I haven’t changed my habits either and my period, pms, or ovulation has never made me do this) in the past week, my face is EXTREMELY oily (again didn’t change anything and it’s not ever like this), my back hurts, my stomach is cramping, my mood swings are at an all time high, my boobs hurt, I’m really tired and the smell of anything makes me want to puke, I’m nauseous 24/7, I don’t know what’s wrong with me, any ideas?