My dick is really f****d up, do I need a doctor?

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Ok for some context I just started cleaning under my foreskin (dad never taught me) and masturbating. So the first problem is with its look. Its got lots of smegma that ive mostly cleaned away, but I notice the purple thing is not going away. is that a different problem? second, what the fuck is that red thing on the tip and is it a problem? I don't know if this matters but I'm not erect.

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Ok the actual big issue for me is I basically cant orgasm. I've came in my sleep before but never actually made myself cum, no matter how long or hard I masturbate. Today I went for 2 hours as hard as possible with a lot of precum but no actual cum. I've never had sex. What should I do? Last problem is I cannot pull my foreskin over my head when I'm heard, and I've noticed that string that connects foreskin and glans looks like the problem.

Do you feel arousal when you try masturbating? Or do you have sexual feelings towards anyone/anything you’ve tried viewing while masturbating? Not saying anything bad but maybe you could be Asexual?