For a couple months now, I have had some issues with the area behind my testicles and in front of the anus. There is a muscle there, I am not sure the exact name, but it twitches every so often, about once very 2-3 minutes. I notice it more when I am relaxed, laying down or on the sitting in a chair. It doesnt seem to occur while at work, but it does happen in school. It only lasts for about 1-2 seconds, and it is not painful. It feels like a normal muscle twitch, just behind the testicles. I have felt it while it has happened and it feels like strips of the muscle tighten up and relaxes rapidly.
It doesn't seem to effect my masturbation. I am 17 and I masturbate regularly (once a day). Perhaps that may be the issue?
I am curious as to what it may be. I am kinda embarrassed about telling my parents, that is why I came here.
Any suggestions or help would be greatly appreciated.