Do I need to see a doctor?

[Mcfc1234]

I have a few symptoms that are worrying me. Recently a white line and several white patches have appeared on my arm. Also, a brown scaly bruise like patch has appeared next to these white patches. (I will try to attach photos). Also, on my penis shaft there are a few small brown patches. There is also a tiny hard white raised spot on my penis which has been there a while. I also have a small spot/lump on my head that’s been there a while which I have picked. I know all these things are probably not connected but I am worried that I could have cancer or something and it’s really effecting my mental health. Also recently I found a lump on my testicle which was checked by a doctor and found not to be cancer .

I’m 20 years old.

Could you please advise me what these things could be from your experience/knowledge and tell me if you think I need to see a doctor .

Thanks for the help

[xsevenx]

Best to see a doctor if you are worried.