Hi, during a routine check of my testicles which I tend to do every so often, I felt a pain in the left testicle as though I had squeezed it too hard. I didn t think anything of it at the time, however I have had an occasional dull ache in the left testicle ever since. The ache only seems to come when I shift a certain way, or if it suddenly impacts against something. It has also affected my ability to achieve or maintain an erection - presumably because stimulation tends to bump it. Help!