About 3 weeks ago this bump appeared on the shaft of my penis. The last time I had sex before those 3 weeks was over 2 months and it was protected. Both me and my gf lost our virginity to each other and everytime we've had sex its been protected. On top of that, both her and my sexual life were essentially non-existent before us so the chance of her having an STD is so small. I take 2 showers a day so I like to think I'm clean down there. My first thought is its some sort of pimple but the way looks / how long its been there is freaking me out.
Any feedback would be very appreciated!
could be a cyst