I've had this happen with Epi, and so I stopped after about a week of an ED 20 mg cycle. Probably a month and a half to 2 months later I decided to do a pulse cycle with MWF 30mg Epi and didn't have the testicular discomfort. I understand what you mean about the pain, it's not like in your face pain but it's very dull and you can notice it when you pay attention to it.