my age is around 28, i don't drink or smoke my only bad habit is masturbation, i am being inolved in this action since i was only 12 so almost 16 years, i am not able to stop this habit, i never had a sex in my life,normal i do masturbation ones in day some time 3-5 times a day,now i felt like i am facing Nervous problem and when ever i do it i feel sleepy and the biggest problem i fell like my pennise is reduced in size, i measure my size which was around 4.5 inches on full exited but now in normal is only 1.5 inch and on full exited it is only 3.5 now which has broken my confident to face any gril total, i dont know what to do, i have read that masturbation doesn't do any harm or reduce size, then why this happened, kindly help me with this problem, how to increase my size agian ? and what is best and safe way to do that, i am not married