Hello, about 1 hour ago i found what looks like a boil on my penis, about 3cm form the testes. it hurts when touched. should i be concerned?

Yes: A boil on the genitalia is concerning for a sexually transmitted disease, so you need to get this evaluated.

Prob. not of concern: However should be seen by a urologist. Likely an infected hair follicle or sebaceous cyst. May well need to be opened, this is quite minor. Unlikely anything serious, but, should be checked.

Yes: Indeed, it sounds like you have a boil although there are other possiblities. Treatment depends on the diagnosis, the location, and your co-morbidities (eg diabetes). Get to your provider to have this evaluated.