Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Masturbation is natural and it cannot take away your health or cause any damage if practiced in moderation. Once daily is normal. As you are already diagnosed about the testicular pain, that is it. The feeling of pain at random area mostly is supposed to be of obsession. You could worrying about masturbation and your sitting position and testicular pain which in turn makes you apprehensive of any future trouble to your love life or sexual life. There is nothing to worry as such. Main problem is your sitting. Every one hour go for a small walk of around 500 meters. Stretch as and when possible. Try to be happy about your job and the position. For psychological and sexological counseling visit http://psychocure.blogspot.com/ Hope this answers your query. Available for further clarifications. Good luck.