Funny thing, I upped my water, been drinking heaps, I also don't have an infection ( I was tested while at the hospital) and so no reason for this...
Cramping can be caused from being dehydrated. Try drinking alot of water. But if that doesn't help I would go to the doctor just in case.
Gosh, same! This is my first, I would like to know why myself, I was actually in the hospital the other day because I was having contractions close together, but now its just painful period like cramps, back aches and random tightenings. Sorry I can't help.