Severe cramping after BM

I’m a little over 4 weeks pregnant. For the last few days, I’ve had severe pelvic (lower back, hips, and lower abdomen) cramping usually associated with bowel movements that last for like 5 or 10 min. I’d say the pain is like an 8/10. I went to OB emergency department yesterday and they ruled out some things like ectopic pregnancy and UTI and said it’s probably a GI virus or something but can’t say for sure. I pretty much can’t eat anything or it gets worse.

Anyone else had this problem???