I am also 10 weeks pregnant .
Who knows. Could be a 24 hour stomach bug or something.
I know that a few weeks ago. I had non stop practically explosive diarrhea for nearly a week.
Doc said it was fine and it was common during pregnancy, just like constipation.
Don't forget to drink lots of water and stay hydrated!
Here's some advice on stomach bugs in pregnancy from MedHelp.org.
You can also find it in the Week by Week section of the I'm Expecting app -- check Week 10.
Also... diarrhea is a common pregnancy symptom. Here's some advice.
You can find this in the app by going to the Pregnancy Diary from the home screen and selecting Diarrhea from the Symptoms menu. Then click the menu bar in the upper left and select Symptoms Manual to see your symptoms. Hope you feel better soon!