My partner tested negative for syphilis andd IgG non reactive for Herpes 1 and 2, 7 weeks after her previous encounter. However, 8 weeks after having sex with her, 2 little bumps appeared on my penis head near the urethral opening. They lasted for a day or two and dissapeared with no scabs or ulcers or scars, a few days later, they reappeared, same stuff, disaapeared in the same fashion as well. Are those bumps related to my masturbation, or herpes? Thank you!