It seems that bladder capacity may not be keeping up with urine production at the moment.
this is what my primary care physician surmised. being cathed for 2 or three weeks, he said my bladder wasn't as pliable or big as it was pre-op. he told me to hold it to "stretch it back out". made perfect sense at the time. don't know if it's real or not or how much liquid was coming out, etc. but i was going a lot.
cleared up. get up once a night like clockwork now