Suggest Treatment For Infection In My Penis

hi i'm a 32 year old male about 6'2 80 kgs physically always been healthy pretty much have had some mental health issues but generally their under control these days. Although i am under serious concern at the moment about damage i have inflicted on my penis it happened due to a stupid idea to put a 'ring' type band at the base of my penis when masturbating. Although it was quite firm i know it didnt cut off the circulation completly not even close to that as thats obviously very stupid. but no doubt affected it (the circulation) i figure. it wasnt really tight enough to cause any siigificant pain but was on for probably a half hour or so. To look at my penis it is fine yet i have noticed moderate lack of sensation since then with orgasm its been 2 weeks now and i am concerned out of my mind that i may have done pemanent nerve damage or something along those lines.i need to get it back to normal or the future quality of my sex life is in question i plan to see a doctor asap but am anxious for some information now. Any advice would be much appreciated?