will mastrubation lead to lose of man hood ?

Hi ,
i am 23 yrs old ,i do mastrubation since from my 14 th year ,i do mastrubate by making my penis semi erect and then folding it and force it to relise the sperms ,i won't get the sperms out ,due to the fold .know i feel there is a problem in erection,please tell me how to get my normal erection back,
know i am suffering from prostate glands infection,will cause me this problem,i also feel my external organs became losen most of the time.help me i am in great depression.[/b]