Off The Subject......

I know this has nothing to do with micro living or electronic do-dads, but i had to write it hoping to get some opinions. I don't know if anybody reads my thoughts but i want to put it on "paper" anyway. So here it is:
Thursday I had oral surgery scheduled to remove 3 teeth ( 1 was broken, dentist said "while i'm in there I might as well extract these other 2") My cardiologist would not let me go off my anti- coagulant medicine as he was concerned about clotting on my stents- Yeah, I'm 37 and have 4 heart stents, but that is for another post! Back to the subject at hand, I was supposed to be put under but due to my tolerance for pain medicine I was awake for the whole procedure, the pain medicine tolerance? yeah thats due to the fact my kidney doc cut a major nerve in my flank and now have chronic pain in my side, hip, and back-thats for another day two! So they get the 3 teeth out and send me on my way, with bleeding....surgery was at 1pm, by 11:30 pm i felt like i had lost a gallon of blood so I decided to go to the ER. By the time I get there I look like I got shot in the face, it is nice how you get immediate treatment when you walk in covered with blood! So I spend the entire night until 6:30 the next morning spitting blood- the ER room looked like a horror movie bloodbath, finally they get a dentist from the same practice that I had been to, his opinion was it was a combination of medical & surgical bleeding, meaning they screwed up and 1- did the surgery while i was still on anti-coagulant medicine therefore my blood would not clot. 2-didnt get enough stitches in to close up the surgical wounds. Which he proceeded to do in the ER with, God bless their souls, ER nurses who are not trained to handle oral surgery. Therefore I experienced pain that i did not know was possible. After finally getting it stitched up they decided to keep me for at least another day as they had to give me 2 units of blood due to the fact I spit out so much my blood count was low. I spent the next 30 hours in excruciating pain and trying to keep my sanity because of it..This leads to the question at hand, I don't think I should be financially responsible for their screw-up, so what do I do? get an attorney? What are my options???