In my reading, I found that a fractured femur is a serious injury that takes 3-6 months to heal. Did you break your femur yourself? If so, how?

Hi there look this is complicated . I had a bad broken right femur midshaft in a car accident august 2008 after six months later of non-union fracture of 2% healing my doctor advised me to have another operation with bone grafting system applied and I had the operation in 10march ..ok now after 3 months there is an evidence of healing I started to go swimming ,,my doctor also advised to have one crutch only to put a little bit pressure on the broken leg and the crutch is helping me balance my walk but the problem is here ...when i try to walk without that one crutch i can also walk but little bit limping with no pain but after 200yards of walking I then continue limping but this time a little bit of pain..I can also walk with a cane without no limping .advise me with this one how do i stop limping and is that because my leg didn't heal properly? secondly my doctor says that i need another 9months to recover or back to normal activities like playing soccer,football!

is anyone had kind this exprience to tell me how long is gonna take to recover and give me some tips about this?

thanks
santi.