I was looking on line to see any thoughts on diarrhea in the third trimester. I'm 30 weeks, and now on day number four with diarrhea. I get massive gas pains, cramps and run to the bathroom

... a couple of times a day, this morning first thing.
I don't have a fever or anything else like that. The first time it happened four days ago it was about a half hour after I ate, two fried egg and cheese sandwiches. I thought maybe the eggs were bad or something but then thought it was too soon for some kind of food poisoning.
I'll call my Dr. today, she's not in until after 1:00 though. Any thoughts on this, I read it can cause hemmeroids (which I didn't have with my other two pregnancies, probably doesn't mean much though). I've been basically on the BRAT diet since it started to no avail.
Any thoughts!
Thanks and Take Care
Jessica