Extreme nervousness before school

I’m starting a nursing program. This is actually my third attempt. The first time I had a panic attack during the entrance exam and didn’t get in, the 2nd time I was so anxious I threw up twice the night before and quit. I’m going to try again but I am still so nervous and even more so because I’ve already tried and failed. Even just picking up my uniform gave me so much anxiety I had diarrhea 😂 has anyone else experienced anxiety over school? I’m on antidepressants that help but I still get nervous