Anyone else getting diarrhea?

Julia
This is probably the 6th time I've had diarrhea since I've been pregnant, and I'm 13.5 weeks. Before I would get it maybe twice a year. It's starting to get so frustrating. I've been careful not to eat anything that's not fresh and have been cooking most of my food at home, and I still can't figure out what's causing it. I end up eating rice the next day to calm down my stomach.
Has anyone been experiencing this too? Has anything helped?