Poop question

Ashlee
Is it common for women in early pregnancy to experience diarrea? This is my second day with it, could possibly be a bug I contracted from my six year old who missed school last week with diarrea, I feel mostly fine. Aside from seasonal allergies, I feel completely normal. 
I'm so frustrated. Naturally I'm still in the stage where I want to eat everything and now I'm limited to toast, applesauce, rice, and bananas! Haha.