Relax bete dekho pehli baar penis ki skin theek tarah se piche na hone ke karan blood nikal sakta hai. So it is very common! Lekin Phir yadi aap itna tension pressure mein rahege mein toh ling mein tanav ki samsya utpan ho sakti hai bete! yeh samjh lijiey ki sex karne ke liey bilkul tanav mukt hona zaruri hai bête : Jis baaray mein aur yaha padh lo : http://lovematters.in/hi/news/4-signs-you-have-erectile-dysfunction