Hi! I'm a 23 year old male. I'm virgin and I met a girl online and we started to have "oral sex". So basically we kiss and perform oral sex on each other, but no penetrative sex (neither vaginal nor anal). No protection was used. She was sexually active (with no protection) with four partners before but she claims to be clean.
After two sessions, I noticed a small red bump on midline of my inguinal canal region towards my pubic region. That was a week after I first met her. It is starting to disappear, no pus, no pain, no itching. It has a little bit of a dark base though.
I met her again for the third time two days ago, and now I noticed a red, hard, big bump on my scrotum. Not painful (unless I press really hard), no pus, no itching. But it is very prominant. No other symptoms. No lesions or ulcers anywhere else including my penis.
I'm worried and I tried to review all the possible STDs without being able to match these symptoms with any. Can you help me please? Thank you!