ok im 16 and im a vigin, and i masturbate... it started about a week ago.
first i had red spots on the shaft(only a little) and on my forskin(a lot on the side of it), but the outside of my skin has none. just when im erect or i open my forskin i can see the red spots.(im uncircumcised) the forsin part itches.

i was worried so i started to put some vaseline(petroleum jelly) on the second day. few days ago the red spots on my shaft was gone but the red spots were still my forskin.

then about yesterday i thought the forskin was finally getting better but today i checked and it kinda went back worse. although as today my shaft has no red spots only my skin part

the most redest part is aound my frenulum area. then the red area kinda branches out and it becomes a red spot on its own. ( Its kinda like bunch of colonies(colonies) by its self but around my frenullum, there is so many red colonies there bunched together and it looks like its just all connected around the frenullum).

when ever i shower and wash my penis it feels good and after drying my penis i put some vaseline and its done itching. but about the the next day it starts to itch again and some times i shower twice a day since it itches so much, once in morning and afternoon bit its usually just in the morning.

please tell me. is it std? or just some infection? i try to be very discriptive. so please give me advice.