Hello Sir, I am 30 year Old,never had sex. I were mastrubating(not so frequently) at age of 16-17.Now from that time,things came in my mind,if you mastrubating,your erection will be weak.sex life will bad. so those things are not going out of my mind,i already saw expert in Mumbai,he checked,and told me ,all ok. still mind goes around same thing.i will be married after 6 month. I have not done sex,still think about semen quality. so please advise me.i do mastrubating now once a month....So do you think any problem? Thanks a lot Sir,,