intense/cramping/nagging pain in the middle of my back, ribs

I am a 25 year old female, hmm sounded like a good place to start. For about two years maybe once a month if that I have had an intense/cramping/nagging pain in the middle of my back, and around my rips. It hurts to breath sometimes, and I can't sleep when it happens. It usually makes me cry.. WELL, fast forward.. this past week has been the worst! It happened about a week ago, BUT WILL NOT GO AWAY NOW.. I have no started puking the last three days. The site, and smell of food makes me sick to my stomach. I feel full without even have eaten. My stomach is constantly sore, etc. I've had mild chest pains here & there.. and idk it's driving me nuts! Any ideas? I'm thinking I am going to have to go get checked at this point.