i have some bumps that recently have been appearing on my pubic area they usually get swollen then burst n pus comes out and then bleed and then the process repeats but i only have three bumps and not all are filled with pus or bleed. I'm wondering is this crabs or any type sexually transmitted disease i must admit tho i am a person that sweats easily, could this be a cause, does masturbating alot cause anything like that? please help me i need some answers