What to do if i always do this in public?

Im 15 and i have always been insecure about my penis. Ive never had kissed or hugged a girl. When im outside i make myself have erections on purpose and then walk around with it and sometimes i get some women look at it and it just gives me the attention i need. What to do? Im 1 month in nofap (didnt masturbate or watched porn) but i feel like this is bad for me since every time i do it precum comes out

 

I really hope i will get answers