I know how that feels, that's me in a coding for artists and designers class. Film major?
I also have trouble handling the pressure. Does your uni offer counseling/crisis services. I'd suggest talking to a counselor when you're super stressed. I had a massive freak out and melt down two weekends ago.
Also over midterms, also over grades, also over school, yeah. It sucked. It sucked bad.
There was some pretty useful info offered and advice for me.
Breathing exercises, and just calm down, rest well, take things one step at a time. Break down your bigger projects into little parts.
Take like 2 minutes out of your day to plant your feet flat on the floor, put your hands on your knees, close your eyes, and start breathing in and out (count to four I think it was). Tap your finger on your knees. Focus on that sensation. Continue breathing slowly. Focus on how you feel, try to relax the muscles a little. You can do this anywhere you have a place to sit and 2 minutes.
You could probably do it standing, and just tap on your arms or something.
I dunno, just... do your best I guess? I'm certainly not a counselor. I'll try to help if possible. Maybe not on homework, I'm swamped to death right now, but general freak out break down your projects stuff, I can try.
*shrugs*
I'm just kinda meh at this stuff, but I did start doing some research on anxiety and stress and dealing with it