I'm a 22-year-old guy and I'm having a bit of a situation. My foreskin doesn't seem to retract on its own when I'm erect, and I can't really pull it back manually either because it's too tight. I can pull it back fine when I'm not erect though. Any idea what's going on or what I should do?
It sounds like you have phimosis, which is a common condition where the foreskin is too tight to retract fully during an erection. Regular gentle stretching exercises with a steroid cream prescribed by a doctor can help, but if it persists, consult a urologist to discuss further options like a minor surgical procedure (circumcision or preputioplasty).