Help me and youl be my hero?

Ok let's start off by me telling you its been like this for 2 year I think any way its a problem I've had these glans cuts and are just anoying looking at it andmy has like a middle bruis around my middle of my I mean this stuff doesent hurt but it feels numb and when I piss its kinda hard to piss and stings a little but I've chose to ignore it but now I have a docters apointment coming up I kinda hate the docters cuz of shots and all that this is kinda the lease of my worries the most part is that my dad when he finds out that my is infected or or injured he is gona freak! Because he he's gona get mad one because I dident tell him my docter opointment is on the 25th and I think I have the cuts on my because its a skin aritation and I used a bunch of vaseline lotion and just lotion I could find but I need a way I can change the way it looks right now because the way i m headed is not good my dad is gona yell at me and ground me to death because he's gonna wonder why I dident tell him this before resipn why is gone because I was scared and what will I say? What will I do? What can I do? I'm worried as ****!!! I'm only 15 and I don't whant my penis to be descusting. Please tell what's the worst thing there gona do to me in the docters office cuz I ant geting any shots and **** sergery are they gone give me a cream/ a pill o one more thin my penis is realy weak that's how much I've been masterbaiting so please help!!!