Dear Welcome to HCM We understand your concerns I went through your details. Head ache after masturbation is possible when there is a stress angle related to it. Usually masturbation is considered as a safe exercise without any physical implications. But in excess, more than one masturbation per day, is stressful for the body as well as mind. Such stress could develop itself as head ache and throwing up. I suggest you to abstain from masturbation for around a week and restart it. Observe and note down the changegs you found in your body and behavior. Then, if found anything wrongm please consult a physician. If you still need my assistance in this regard, please use this link. http://goo.gl/aYW2pR. Please remember to describe the whole problem with full detail. Hope this answers your query. Please feel free to post follow up queries. Available for further clarifications. Good luck. Take care.