i'm a 20 year old male. i've had sex with 8 girls, unprotected with a one who i dated long term. i haven't had sex in about 3 months though i have had oral sex more recently and i'm developing small red bumps on my inner thighs that come in contact with the scrotum. They're itchy when disturbed but have no white head and don't pop to produce blood or puss. They look like folliculitis but there is no hair follicle at the center. They dont' seem to have anything in them as they flatten and grow out when scratched It's also not chafe, as it is unlike any chafing i've had before. I'm intensely worried as i haven't ever been checked for STI's.