Okay I was jumping on trampoline , no flipping or anything, and I came down really hard after a bounce and when I went back up, my leg was stiff and in a lot of pain . I landed on my back to avoid making it worse and tried getting up to go inside my home , but I couldn t put any weight on my leg because the pain was kind of severe .My brother had to carry me inside. As I lay on the sofa, I tried stretching and bending my leg. I could only bend my leg upward a little and as I tried stretching it out, i felt terrible pain. So i have to keep my leg slightly bent as I lay because it is painful for me to have it flat . I was just wondering is this injury severe enough to go see a doctor? I came here first to get you guys opinion instead of going to the doctors because it might just be a strain.