Go to a doctor and tell them what you've noticed. A change in hair texture as well as sudden hairloss can by a symptom of deficiencies, hormonal balances or other issues like thyroid or digestive problems. Better to rule something else out first before taking hair medications you might not even...
If you can get it up during masturbation but not during the sex, the issue will be that you are aroused by p**rn, rather than sex. If it were an effect of the medication you wouldn't be able to get hard at all.
Give the p**rn a rest, or at least cut back, and try just going with what feels good...
I've read through this whole post and made an account just to reply. I can definitely sympathise with what you're going through and the way that you feel about what is going on. Even though people are saying, "Dude you've still got so much hair what are you worrying about" etc. I think at the...