Thanks for writing to us.
The sperm which used to come out during sleep was the extra semen that was not being used. Now that you have started masturbating, there is no excessive semen for nightfall.
At a younger age people usually have more sex drive and their frequency of masturbation
is maximum. You can indulge in this activity as long as it is pleasurable and you have the drive for it. It should not cause you any pain.
It is not a trait of embarassment to masturbate. It is just normal as I think for you.
It does not cause any long term weakness or health problem. You can do it 3-4 times a week as per your convenience.
I hope this information has been both informative and helpful for you.
Dr. Praveen Tayal