might also want to get checked for urinary retension. many people have it and don't know it. it can be caused by different things. however, one of the symptoms is the inability to go under certain conditions and not being able to empty your bladder completely. having your bladder overly full can cause reflux into your kidney, which can cause serious kidney damage. I know about this, because I was in the ER after one of the V2Rs (for crash related stuff) when they discovered I was retaining over a liter of urine, even after going to the bathroom. one way to solve your problem, is to use an indwelling catheter when you race. some have a flip valve so you don't constantly drip. they are effective, but can be a bit uncomfortable until you get used to it.