36 Weeks diarrhea and cramps

Hi everyone,

I need some advice, the last few hours I’ve felt nauseous, I keep getting up to go to the washroom, I tried to poop but nothing came out I went back to bed and then kept having cramps so I went back to the washroom and had non stop diarrhea, once I was done I went and took a bath, when I got out of the bath I felt better went back to bed and again I had cramps and had diarrhea again. I feel awful and he won’t stop moving inside. What are your thoughts??? Anyone else experience this at 36 weeks?