went down hard in a first corner tangle with another rider. landed on right side. crawled off track, trying to regain breath, thinking that i broke some ribs. once i got my breath back, i got up and finished the moto. was pretty sore for a few days. tried to ride 4 days later, and when i came in, i was sore again, and now it hurts to breathe, laugh or sneeze. doesnt seem to be getting better as its been 6 days. im 35 and 175 lbs. ive had plenty of broken bones, and nothing seems broken. no sharp pains, although there is some pain to the touch. it it possible to just bruise a lung?