Sounds like a stomach virus. Wouldn't hurt to call your doc. Stick with a brat diet if it is a tummy bug- bananas, rice apple sauce, tea/toast.
How far along are you? I am suffering from same thing right now. My baby is moving good so I just had saltiness crackers and a banana.I'm 35w
Sounds like food poisoning to me. Can't you call your doctor and ask?