IM scared of running!! help!!?

im 16, just recently i recovered from an injury. I had a very nasty fall while i was running. Just wen i was doing the last mile of my 10k practice run, i tripped on sumthing n fell BADLY on the hard asphalt. I was about a mile away from home. sumhow i walked back home. I had nasty wounds on my knees, palms, a broken tooth and a broken nose. I'm almost fully recovered now, the doctor told me i can do a few easy miles, but i dont feel like it, i cant look at my shoes, and i shiver wen i look at the lonely road were i run. ther is no gry terrain out here, its just sand rocks and road. Please help me. I have a cross country event in march and my school is counting on me. i have to train!! but i cant!! :(:(