hi ..i am 22 years old..daily i did masterb my pennis till i get cum..i am doing this from 5 years.. before 5 years my pennis was very strong and stright..now after doing this masturb it become very week and it is not straight ..i am worrying about my pennis now.. if it is not strong i cant do sex ..can u please give me suggestion for me ..i am really afraiding about this..please help me..