Can’t keep anything down..

Okay, so tomorrow I will be 12 weeks pregnant with my first child. I had an appointment scheduled for June 8th, and I went in and they rescheduled me due to insurance issues. After I left I fixed the insurance issues. They rescheduled me for the 27th, which was yesterday. I went in, filled out some paperwork and got checked in. I was waiting to get called back when the lady who checked me in called my name, I looked at her and said “yes?” She said, “I’m going to have to reschedule you” I said “this is the second time you’ve rescheduled me” and she straight up told me “there’s nothing I can do about that.” Well they rescheduled me for July 18th, but when I got home I made some phone calls to see if I could be seen sooner elsewhere. I now have an appointment July 2nd. But anyways, yesterday I ate and felt good. But later in the night I threw up everything I had eaten, and now I can’t keep anything down. Not even liquids. I’ve tried everything and nothing seems to work. Currently I’m trying to drink ginger ale & eat some saltines but I’m still throwing up.. does anyone have any suggestions on what I should do? I’m kinda freaking out because I feel like the baby isn’t getting enough considering I can’t hold anything down.