Couldn't fall asleep

I'd just come down from being stressed at work, but I still couldn't fall asleep because I'd feel different physical symptoms (i.e. muscle tension in one spot on the far left side of my chest, or an ache in my left arm) now I can't fall asleep period because I woke up sweating and I felt lightheaded for about a minute. My anxiety is through the roof right now and idk what's going on.

I'm scared to fall asleep again. What do I do?

Disregard this post.