Stomach bug or something else?

Im 29 weeks and yesterday (night after Thanskgiving) at 3am I woke up feeling nauseous and needing to have a bowel movement. I didn't get any sleep the rest of the night and by 8am I was vomiting and having diarrhea. I ended up vomiting every 10 to 15 minutes for almost 3 hours. I obviously had nothing left after the first couple times of vomiting so I mostly was throwing up stomach acid and bright yellow stomach bile. I had hubby go to the store and get me medicine, crackers, ginger ale and pedialyte. The rest of the day I was nauseous but able to eat a little. Now again tonight I'm following the same path. I was woken up at 3am with nausea and having to have a bowel movement. I have had diarrhea and vomiting again. Hubby said yesterday I felt warm to the touch but I don't know if I am running a fever or not. Any ideas? Stomach bug or is something else going on?