Hi guys, I had a question about my little girl

Yesterday she started throwing up a bit (not much) and then spent the better part of the day with the runs (sorry for the crudeness

) but today she may have gone once and that was all. I would need to ask my mom if it was a normal bowel movement or not since I was not home. My question is, what could have caused it? And is there anything in particular I should feed her to help her tummy? She's been sleeping a lot and I think she may be a little sore back there

Help!