Hello. I'm 20 years old. Recently, I had sex for the first time. Unfortunately,during sexual intercourse, I had pain and eventually after a couple of minutes, I lost my erection. I visited a doctor and told me that I should have myself circumcised. The reason is that I have phimosis (not a tight one though) and a short tight frenulus.

Is there anyone who had circumcised himself in adult age, to tell me if he felt discomfort from the fact that the glans would be exposed all the time?
I'm scared about that, because i'm not used to have my glans exposed and rubbing in underwear or whatsoever, because the foreskin always covered the glans. And sometimes, when I retracted my foreskin, and touched the glans it didn't feel good, rather discomfort and annoying.

So, how am I going to get used to that, after the circumcision? Has anyone gone through this phase before? Or is it just me?