Dear Welcome to HCM We understand your concerns I went through your details. Masturbation is not an unhealthy habit. Masturbation is normal and natural. There is no reason to get short series of cough after masturbation. But you must address two things. First, masturbation do consumes energy and therefore you strain much during masturbation. This strain always could interfere with respirator organs. You should consult a physician to assess the possibilities of respiratory problems. Second, apprehension and obsession related to anxiety can cause repeated symptoms. Whenever you masturbate, you are expecting these cough because you had it last time. Such expectation can cause the cough itself. You may consult a psychologist for further advise. If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. Hope this answers your query. Available for further clarifications. Good luck. Take care.