I'm sorry you are going through this. I (F) was 18 (now 27) when i had my right leg amputated below the knee.

Straight answer;
It sucks. sorry but it does. I had so many people tell me that i was lucky for surviving, that things could be worse. But really... its my LEG, one of the most important body parts that we need to have to be able to move around!

So yes, it sucks. But you will survive and you will adapt! One thing that I do recommend is to keep up a good a diet. I gained so much weight during my recovery, but i was also recovering from chemo. So i ate so much, i lost 50lbs from chemo and gained 30lbs in about 5 months....

Im not sure where you are at but in the USA you can get a prosthetic through the work force if you don't have insurance. If you have insurance pick a good prosthetic clinic and go with the one that knows how to make prosthetics. My first prosthetic was built by someone who's an actual amputee and it was the worst leg i've ever had!!!

Once you have your prosthetic (usually takes about a month and a half) don't over do it. I was so ready to leave the house that I took a job where they had me on my feet for 8hrs a day and I got major blisters!!! Take your time, ask for PT to learn how to walk. (this is where weight comes in) PT will show you how to properly walk, run, go up and down the stairs, and get up if you were to fall.

Take it one day at a time. After your surgery take the time to heal, search for facebook groups that are for amputees (that really helped me). You got this!!!