CRAMPS!!!!

Hi ladies! This is my 4th pregnancy and I'm loving it. One problem though is that for the past couple of days I've gotten really bad cramps in the muscles of one side of my buttocks 😱. It's like I have hard little rocks as muscles.i tried to massage them out and drink more water. Also tried having the shower head directly on my butt to release them. It seems to be getting more and more painful pressing on my nerves. In my last pregnancy before this I had some bad leg cramps that I would wake up at night from and some that didn't go away for weeks. This is in a completely different area and is driving me nuts!!!!!! Any suggestions would be welcome 😘😘😘😘😘😘😘😭