Should I be worried

Since around 4am I woke up with bad cramps and back pain so I went to poop and I did but it didn’t go away. It hurt really bad so I took a Tylenol n I felt kind of better n fell asleep. It’s now 8am I woke up bc my toddler woke up n the pain is coming back. I have watery poop now I guess diarreah and I feel nauseous now. My cramps are back. I’m wondering is this normal.? Is it something I ate maybe.? I’m miserable I feel bad 😭 I’m 33 weeks

Update: I just threw up alot