Are you for fucking real, man? Get to the Dr., it would not affect your penis development, so if you're not endowed, don't go blaming your nut sac infection. The Doc will probably give you a long (4-8 week) course of Doxycycline. You should be warned that a long-term untreated infection in the area you described could lead to infertility, so if you're not fucking around, go get checked out.