My penis is an inch long and 4inches when erected, it looks very small normally. is there any problem with my penile nerves.please help me.

You're good: This is smaller than most men but you shouldn't have any trouble satisfying most women or getting satisfaction yourself. A smaller penis gets harder and gives you better control and ability to stimulate her best nerve endings which are in the front. Don't compare yourself to the guys in the goofy pictures, and learn to use your entire body, especially tongue and hands, to be a superb lover.

Normal variation: There is a great deal of variation among folks and body parts, including the penis. Please ask your doc to examine you to put your mind at ease and then love all that you are. Don't use penis as a measure of self-worth. That can also help the anxiety and headaches you mention in your history. A clinical psychologist can help too.