when i was like 7 years old i was struck by a roadie on an mup. the roadie was attempting to pass me but didn't make an audible signal to me that he was passing. i did a u-turn without looking and he t-boned me. we both were pretty beat up, his bike was mangled and unrideable. in retrospect we were probably both at fault.

these things happen. don't worry about it too much, just try to learn from the experience to prevent it from happening in the future.