I have been masturbating since i was 13 years old. I remember when i was a young teenager, my erections were much stronger. With that said, i believe the size of my Penis was a lot bigger. I noticed ever since 15-16 my erections have weakened, and now i see my Penis size has decreased. I noticed it decreases every time i masturbate. I'm 19 years old now, I'm not commited to any women right now. However, i fear i will never be able to satisfy any women, nor have be able to pro-crate any children with a women in the future (Sexually speaking) . I wish i was the same like i was when i was a younger teenager. I feel as if I'm a older man, I seriously need some doctors guidance, and help.