You didn't answer.
Answer this now: You are 25. What do you want to be doing when you are 35? When you are 45? When you are 55?
YOU HAVE TO HAVE SOME SORT OF PLAN. Otherwise, you're quite likely to be one of the folks standing next to a road, guarding a gate that nobody ever goes through.
HOPING that you'll make it through basic and AIT in decent enough shape, and uninjured enough to do jump school, and maybe pass, is _not_ a plan.
Do you have a prior or current service mentor who is going to the recruiter with you? The recruiter doesn't count. He's there to score warm bodies, and if a job's on the list, he wants to fill it. You need to sit down and very carefully go over EVERY option. The recruiter may not tell you every option.
I don't know what you did, other than get ink. I don't really care. At least you're being honest with the folks. That's a plus. Personally, I'd go as techie as they'll let you, and then wait for time in service/time in grade to negate your troubled yout days...
Also, you NEED to start eating more protein... On a low calorie high carb diet, your body burns EVERYTHING, including muscle. That's why you feel like crap. Gitcherself a jug of the protein drink stuff, and try to get at least 25-50 grams/day, while working out.