I was unable to ejaculate during sex until i was 23 years old

I started to have sex when I was 16. I was never able to cum. I did however have a couple wet dreams as a child, not alot. I was never able to jack off or cum during sex until I was 23. I saw a doctor when I was 18 and he said he did'nt suspect anything wrong physically, but could run more tests. I didn't have alot of money and was feeling wierded out so I did'nt follow up. The doctor said I might be self conciously holding back. Years went by and I had a few partners that tried their best to make it happen and it never did. I remember when I was I think 7 years old, I injured myself deliberately by letting a cedar chest lid close on my penis. That hurt real bad and left a scar. I also went to hypno-therapy because of certain instances that led me to believe I was abused at a young age, and I could'nt remember or was blocking it out of my mind. I remember when I was 15 and slept over a buddys during them (experimental years) telling me I need to stick a pin down it. OUCH. I had enough sense not to. Well anyhow, one night, I was 23 and I jacked off. I've been like a kid with a new toy since. Anyone ever experience or hear of anything similar?