So heres the not so good news you'll likely hear: Being young and active you have a 90% chance of a second dislocation. Young is actually not good for shoulder joints. Yes it sucks.
I did my first dislocation kayaking a creek a year and a half ago. I hit the rehab hard and two months later, I was kayaking hard big rivers in Africa until another dislocation that novermber kayaking a powerful wave. I did little rehab after that and made it a year (skiing 80 days) until my 3rd dislocation rock climbing 2 weeks ago. Im now scheduled for surgery in the summer, and I plan on skiing hard all winter.
The key here is this shoulder brace I got through my PT. Its made by BREG and it locks your shoulder into a limited range of motion so you dont dislocate. Ive never dislocated while wearing it. I can ski and kayak just fine with it on. Talk to your PT or doctor and have them order it. It costs like 400 bucks (absurd), but youll likely meet your deductible this year and if you work your insurance company, theyll pay for it. Get it to go on both shoulders too, if you've got one bad joint you may have two and you better not even go there.
The problem is that the shoulder brace is not convienient. You wont be able to play basketball in it. However, for skiing its pretty solid. I forget im wearing it unless I am skinning up or going for a tail grab or nose. Get the brace, its worth it.I've been told that surgery is 4-6 months recovery (from activities) depending on the damage done. Your and my best case scenario is skiing in 3-4 months post surgery with the brace.
My advice to you is to do your PT super hard. Do like three times the activities they tell you. Like they said above, even if it feels better dont stop the excersizes. The odds are slightly in your favor, as the longer it is out of socket the more damage it does. You sound like you got it back in quickly, perhaps even subluxed.
Good luck from one cripple to another. Ive got to go fix my tendonitis from typing so much.
My dad also dislocated his shoulder, same way as you. He chose to not get the surgery and simply excercise at home to regain the strength/range of movement. He had problems with it for a while but I asked him and he told me he thinks it's about 95% of what it was before, which is as good as he thinks it's ever going to be. We have a history of weak joints in our family, and actually when I first started skiing my right hip would pop out of place and I would have to stop and pop it back in. I went to the doctor and he said the most important thing if you have a problem joint is to make sure the muscle and tendons around it are as strong as they can be, which is the point of physio. So he assigned me an excercise routine and it's better than it was before IMO.
PS...My dad dislocated his shoulder mountain biking in the river valley. A beaver ran out into the trail and he t-boned it and endo'd. Just thought that would be a funny addition.