I bought an Aneros Eupho Syn a couple days ago and have tried it twice now, following guidelines on the [Aneros Wiki](http://wiki.malegspot.com/index.php?title=Main_Page). Both times, I did ~20-30 minutes of flexing/releasing pelvic muscles before developing incredibly painful cases of blue balls and needed to resort to traditional penile stimulation for relief. Even then, I’m left hurting for 30-60 minutes post orgasm before the pain fully subsides.
Am I doing something wrong? The Aneros certainly feels good, but owww…
Source: https://www.reddit.com/r/aneros/comments/755t9t/horribly_painful_blue_balls_am_i_close_or_doing/
Maybe the 20-30 minutes of voluntary contractions contributed greatly to your lover’s nuts dilemma. The contractions could also be causing your post orgasmic pain as well. Maybe you stop with the voluntary contractions and see what happens.