I see this is your first post here on PC, Want2CalmDown. So... welcome to PsychCentral!
Here are links to some articles, from PsychCentral's archives, that discuss compulsive masturbation. I believe you may find at least some of the answers to your questions in these articles:
Is Masturbation Bad for You?
The Top 10 Myths Behind Masturbation
How Much Masturbation is Too Much?
Also... as you can probably imagine... this topic has come up before on PC. Here's a link to an old forum post written by a female PC member who had concerns related to this subject. I include it here mainly because some of the members who replied offered links to what they considered to be some helpful websites:
Masturbation addiction
I hope you find PC to be of benefit.