2 times now I have been in the middle of a test when suddenly, for no reason whatsoever, I get this extremely nervous feeling. I know all of the material on the test, but I feel as if my answer will be insufficient or that I will run out of time. I then get shaky and am unable to write well, and finally I ejaculate. I don t know what is going on, but if I could get some guidance it would be well appreciated.