hey well i only just fully retracted my foresking for the first time, i am 15 an yes its sensitive but ill just keep it out as much as possible to toughen the skin. my main problem is that when i get an errection the think peice of skin(the bridge i think its called) attaching the foreskin to the head is really tight is causing me to not get or maintain an errection because its kind of pulling, i also cant pull the foreskin back when errect but can get an errection with it already pulled back, but then it gets tight like what i said above

will i need to go to the doctors, or can i just stretch it gradually