I am observing increased sensitivity of my testicles. There is no pain in normal condition but sometimes due to under wear impact it creates sensation in lower abdomen, but no pain in testicles. It is happening with both testicles. Both testicles seems normal in size, shape and looks same as they were earlier. When I lift with my palm, no pain or sensation, pain occurs when it gets an unconcious impact. I have masturbated after a long time, about 2 weeks. But I am not sure if it is happening due to that. Pain is very mild, but sensative.