Possibly pregnancy symptom ?

Hi ladies, so I'm wondering if any of you have experienced diarrhea as an early pregnancy symptom? I am currently on day 3 having mild diarrhea. I am really confused as to what could be causing it. I feel fine all day and then will all of the sudden have to go. I am only 5 dpo (I think), any one else experience this?

EDIT: so about a week had passed since experiencing 4 days of diarrhea, and I've been feeling fine, back to normal. Until today, diarrhea is back. I am now 11 dpo. I took a test yesterday and it was negative. What do you think I should do? Wait and see if it passes, or call and make an appointment?