Everything sounds normal. .
Yes its normal. Growing pains and your bathroom patterns will change frequently. Call your doctor if you dont feel right
Ur ribs could hurt from baby kicking them an cramps could be braxton hicks and its normal to pee alot when ur prego but im not a doctor so this is just what i think of fron reading your question but if your worried id just go get checked and talk to a doc jus to be sure!