Wow, jaz, it sounds like you need some serious sex education! Masturbation is not bad for you in any way, although a lot of myths will tell you otherwise. On the contrary, masturbation is actually very good for you! It has many health benefits. For men, it decreases the chances that you will get prostate cancer later in life! My partners have always masturbated. My current partner masturbats every day. Yet he is still able to satisfy me in bed too!
If you are having unusual symptoms, then you need to see a doctor. They could be a sign of something more serious. They are not due to masturbation, however.