Is diarrhea a common symptom in the third tri?

I keep having it off and on randomly some days. Unsure if I have a stomach bug or what. Sometimes I am normal and feel fine and then the next thing I know I am going to the bathroom every few hours and laying in bed feeling crummy. Nobody I have been around is sick. Usually if I take Imodium the first time I wont have it again, but today I took it and it had no effect and I was still going 2 hrs later. 😔 Just lookin for answers. Thanks yall!

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