Hello - i am 45 years old - last year (13 months ago) i had pretty heavy hematueria for about 2 weeks. I had pelvic scans done and a cystoscope - nothing at all was detected and it went away. Now it is happening again. This time of year i always have bad asthma - and use albuterol or levalbuterol every day - i had thought it could be a side effect?? I also had today - dark green stool - and seem to remember oddly colored stool last year at this time when i was experiencing the same hematueria. All my blood/urine analysis from last year were always normal (except for the hematueria and that went away). I am sure there is nothing you can tell me here but i'm giving you a shot anyway????