 [ Symptoms ] i have a small dull ache in my left testicle after i masturbated too much i am 18 years of age anyway i masturbated way more than usual during the week it occurred i am not that worried as i have searched for lumps or mass and everything seems ok an answer would be much appreciated [ Disease ] i have no way of determining what you have based solely on your brief description i do not know anything about you your age your medical history etc in order to be properly diagnosed you will need to see a medical provider    someone who can take a more detailed medical history and more importantly someone who can examine you your testicles are too important to rely on a blind guess via the internet