Frazzled

So lately I've been feeling very stressed out. Its causing my mood to go up and down like crazy. Im feeling stress at work, stress from school, stress from trying to be thin, stress from trying to keep the house clean. The only way I see to release it is to yell, pick fights, or smoke. I had been doing so well with NOT smoking and then all of a sudden I need it again. I cant concentrate, I cant focus, and my emotions are getting the best of me. Ive tried to relax, breathe, anything. Nothing is working. Ive got an ulcer in my mouth, Im sick, I cant eat, I cry a LOT. I hate feeling this way and I hate taking it out on Lee. Theres no one else to talk to about it and he NEVER wants to hear it..he always tells me to shut up or calm down, or get over it. HE doesnt realize how I feel. I feel like I cant keep up and the world is caving in on me and I dont know what to do. Any suggestions would be greatly appreciated.