I'm 23 weeks and was waiting for my bus to take me to work. I left a little too early and didn't bundle up enough, so I was pretty cold. I had been waiting for probably 10 minutes when all of a sudden I got this weird feeling and everything looked blurry, there was this ringing in my ears, and I felt like I was about to pass out. I probably would have if I didn't crouch down..and afterwards I felt extremely overwhelmed and scared. Can anyone explain??