I have a small fear/psychosis about something so I want to ask you people about it...

About a year ago I started to have my foreskin retracted all the time.

I have noticed that in the upper side of my cockhead where the slit ends I can see barely a line of how to say it... the meat iis slightly more shallow than the rest of the head in left and in right.

It's so slight that you can barely notice.
The thing is, I don't think my cock was like that...

So I have this paranoia that maybe it is something bad. That i should stop retract the skin or stop masterbate without lubes etc...

So guys is it normal to have this small deep line over there or should i visit a doctor???