Dude had the same problem it sounds like nerves. Don't think I'm busting your chops because I've been there done that. Man I'm in my twenties and let me tell you if I go through a dry spell nerves can get me to! If I'm wrong ignore me but if I'm not you got to ease up till your comfortable, it's a big deal "the deed" don't thinks its not. Get comfortable first, take it at your own pace Its get easier, and better(if I may say so) as you go. If the problem still persists go to a doctor and explain your situation if its nerves or something else he can take it from there. Best advice I got