Belly shape has changed?

Last night I was having some stretching kind of pain about an inch or two above my belly button and some muscle cramping (I got up funny/sneezed and pulled something). Baby was active as usual so I wasn't too concerned and read that the pain could just be stretching (I'm 32 weeks). I usually wake to pee once maybe twice a night but last night I peed about 5 times a decent amount each time. This morning my belly seems lower, my fundus seems not so high or out. Is this normal? Baby has been moving this morning maybe a little less than usual but hard to tell. Anyone else have this happen? I've had a pretty normal pregnancy and I have had some shooting pains in my crotch area.