am I about to faint?

Andy
So about a month ago I ate a quesadilla and I had a weird stomach feeling like I had to poo. Then when I rode in the car I felt like I was dripping sweat but I was perfectly fine until I felt my hearing getting weird. Then boom I puked. So today I got my hair shampooed and I felt the same exact way since I was lying back. This is kind of scaring me because when it happened before I had to go to the hospital. I am 34wks 4days and I'm nervous that I am going to pass out? Has this weird feeling happened to anyone as far as getting hog and your hearing getting funny?