I am 26. I have been masterbating since last 7-8 yrs. Now, I am married and actively involved in sex. After one year of my marraige, there is quite decrease in my semen volume all of a sudden. Now its only thick sperm with a very little semen. Sometimes, I do sex 3-4 times a day. Is that the reason of this? Now i feel a little pain in my penis when engaging repeatitively. Please, help me in finding a way to increasing the semen volume.