Mera umar 19 sal hai aur mai pichle 5 barso se hastmaithun ka sikar hu mai ek din me 3 se 4 baar hastmaithun ka sikar hona parta hai jis se mera penis kafi chota ho gaya hai aur mai hamesa presan rahta hu.aur chah kar bhi gf ke sath sex nahi kar pata hu.please help me.