Is there a way to get over test phobias?

Absolutely. Working with a therapist and practicing relaxation techniques can absolutely help with test phobias. It takes time. Sould there be a test coming up soon, your family doctor could prescribe Propranolol (depending on your age) to help trick your brain into thinking it is not anxious.
VRT for Phobias. Phobias and anxieties respond well to Virtual Reality Therapy(VRT). VRT is exposure therapy in a safe environment. The research suggests VRT is 90% effective. Seek out a therapist who uses VRT in your area. You can find providers through www.psious.com, www.limbix.com, or www.virtuallybetter.com.