hi, thanks for writing. i have understood your concerns.. premature ejaculation can be because of the anxiety related to sexual performance, highly sensitive penis skin, repeated masturbation..as such masturbation itself does not have any side effects but the way of masturbation causes behavioral conditioning in which person is conditioned to ejaculate early. premature ejaculation can be treated with behavioral techniques and drugs. behavioral techniques are simple ways of delaying the ejaculation. you have to practice it regularly and benefits will appear gradually, the effects are long lasting. your partner can help you in practicing this techniques. you can read them from the internet. drugs are available but usage are different. some antidepressant medications cause delayed ejaculation as a side effects and therefore they are used to treat premature ejaculation. some drugs shud be taken daily on regular basis and their effects will appear after 15 days, while one drug dapoxetine is to betaken half an hour before the sex. in my opinion you should consult a psychiatrist or sexologist and tell your concerns..follow his advice..you both can undergo sexual counseling and therapy.. the headache and nervousness are because of your excessive worry about the sexual problems.. i hope this will be helpful to you..best of luck..