33+5 diarrhea and cramping

I’m 33+5 and for the last week or so I’ve been having menstrual like cramping which leads to diarrhea. The cramping doesn’t stop when I use the restroom. I have an appointment tomorrow but is this normal or a sign of preterm labor? I’m at risk of preterm labor so I’m worried but things haven’t gotten worse and eventually the cramping stops. I’ve been basically putting myself on bed rest and drinking tonsssss of fluids but I’m just anxious. FTM. Thanks!