Normal end of pregnancy stuff or flu?

I have a cold (cough, stuffy nose, sore throat, etc.) but I also have a really upset stomach. Like for the last couple of days I’ve been having diarrhea multiple times a day.

No fever, but I’m worried about the flu 🙁 I can’t take any medicine either, besides children’s Tylenol and Benadryl. I’m 37+1