I'm a man and for a period of 5 years I've been consuming porn regularly and I have developed death grip syndrome where the normal up and down piston motion of sex does not stimulate me and I can't get an erection from it. On top of that I can only feel stimulation while having my pelvic floor muscle clenched.
When I'm aroused or masturbating I clench my pelvic floor involuntarily and its difficult to even move my legs or change positions without it clenching.
I can urinate just fine as I'm able to relax the pelvic floor muscle, but must clench it to get the last stream of urine out.
I've never had sex before and this issue has caused me a lot of sadness as I'm starting to believe any fix or retraining is impossible. I've tried straight abstinence from porn and masturbation, but that didn't help.
Could this be something like pelvic floor dysfunction or a related issue, and what should I do to fix it so I can physically have sex in the future without any pelvic tension?