What should I do about my broken fibula?

I broke my lateral malleolus fibula on March 26th and I removed my cast on 21st of April. On Tuesday, that is on April 26th I am starting physical therapy.

The injury occurred while I was climbing, I am a rock climber. While we were coming down from the mountain, an avalanche caught me and threw me from a rock that was around 4 meters high. At first I thought I just sprained my ankle and continued walking on that leg, until I got home a few hours later.

Anyway, like I said, I had the cast removed on 21st and as far as I'm concerned, I can see no difference between the x-ray i took on the day i broke my leg and on the day i removed the cast. The doctor said that the calcification process has begun, but I'm worried whether it's ok.

I would also like to know if it is possible for me to return to mountaineering in a month, because I have planned to go to a republic mountaineering action next month.

I am still limping, but I stopped using crutches yesterday. I am using some kind of a lamp, I still see no effect from it, but I guess it takes time.

I am 17 years old. And I'm also playing team handball and the season has begun, I am clearly going to miss this part of the season, but I would like to know also, based on your opinion, how long is it going to be before I can come back to training handball.

Thank you.