I am 28 yo male. As child I was developing just fine, used to get sexually aroused and used to have proper orgasms untill age of 16. One day, suddenly I felt something strange in my testicle. Something just felt wrong. I went to check and found that my penis had lost a lot of sensitivity to touch. It felt as if most of my nerves had died. I masturbated to see if my orgasm is normal. As I was masturbating, it wasn't really stimulating and the orgasm just felt weak and totally different. It also took me a lot longer to reach the orgasm. I didn't get the tingles, didn't sweat as much and only felt a fraction of the pleasure I'd normally get. After about a week I realised I didn't have any cravings for sexual stimulation. Whereas before the incident I would struggle going more than 3 days without masturbating. Pornographic images that used to arouse me and give me an erection no longer did. In my mind i was getting aroused by what i saw but my body wasnt physically responding. Little later I realised that my testicle is hurting along with my lower back and my semen is yellowish and not as thick (more water-like). My masturbations also became weak. Over the period of 4 years since the incident, I had gone to doctors with no success of finding anything wrong. I was told to just get used to it and move on. Soon after that I noticed my other testicle was starting to hurt, soon later it intensified and for about 2 weeks I felt excruciating pain there as well as my legs. Legs and feel bacame tingly andvery week. After a few weeks, the pain went away. As odd as it sounds I felt that my genitals and penis have slightly shifted towards the back causing them to uncomfortably sit between my legs so most of the time when I sit my genitals get squashed and it hurts. Anyways, I am now in my late 20's, and still struggle with the problem. I take medication to get a hard enough erection for sex. Sometimes I reach hard erection without the medication but it goes away as I start to move or as I try to have sex. I haven't been able to reach an orgasm while inside a vagina which I think is due to the lack of sensitivity in my penis mentioned before. Over last 12 years I've been to urologist, neurologists, physiotherapists. Had xrays, ct scans MRIs and all kinds of things done of my brain, pelvis, testicles etc. I'm convinced there is someone out there that can help me tackle the problem. This is really serious to me and the solution will surely be life changing. Please reply with your suggestions and advise because I need it. Any info will be appreciated as i obviously haven't done all the tests possible yet. Thanx for your help in advance.