Preexisting medical discharge? Please help?

Hello there, I signed up for navy in Jan 10 and went to bootcamp aug 10 with a SEAL contract. Since about a couple years ago I dove into the pool wrong and did something that makes my back sore and tender every once and a while and I didn't think it was enough to put on my medical record in bootcamp. Well on day 2-5 I went to medical and told the doctor about my back acting up emensly from out daily workouts and told him I did not put it on my medical record. So he ASMO'd me and I was in rehab in boot camp for 3 weeks until I went back to another division. I graduated finally the first week of October. And continued training for the seal program unti march with little lower back pain. I made it all through BUD/s indoc and the end of the first week before I rang out because my body was a mess and I just didn't feel ready for the training. Ever since I quit my back has been the worse it's ever been. I mean, I have to sit down to put my boots on in the morning, it's hard to bend over and when I lay in bed, I can't lift up my right leg and it's hard to stand for periods of time.. I'm in Florida now for school and I'm worried to go to medical, in fear of them discharging me for fraud, and not getting any benefits.. I mean I'm only 19 and I don't really have anything to go back to and I want to use my GI bill to go to school.. What kind of dischrge do you think I could receive? Who could I talk to? Who could help? Would that be a fraudulent enlistment? Please help