Welcome, JaneClaire!
If you're taking any meds at all, I hope you've looked them up to find out what their possible side effects are. Often prescription drugs turn out to have quite a few neurological side effects, and sometimes a simple adjustment in the dosage (or eliminating that drug entirely) can make a huge difference.
Usually exercise is beneficial, but I've known of some instances where it wasn't advised. Have you thought about physical therapy?