a little confused. TMI

This is embarrassing... So I'm 33 weeks pregnant, and I got busy with myself. As I came my legs locked so I was stuck and I'm not sure if I peed myself of my waters broke. I'm too embarrassed to tell anyone. I've had a lot of pressure lately like my waters are going to pop and i need to empty my bowels often. I've had severe back pain and sciatica also period type cramps but I'm only 33 weeks. How can I tell the difference between pee and waters? And I know 100% I did not squirt