Hello I'm A Virgin And Masturbate 1 Every Day. Last

Hello I'm a virgin and masturbate 1 every day. Last night when I was masturbating I noticed that there was a bump on my shaft on the left side in the middle. The bump is the same color my skin but kinda shiny what is it I never had sex so it not a transmitted diseases right? Is it caused by lack of hygiene ? Is there a cure like natural stuff that could be found at home