Man, I read most of the comments. I'll try to talk about what I didn't see.

Masturbation itself won't affect you in any way, but the habits and the psychological mindset you probably already have or will create can and most likely will have physiological effects on you, and not for the better. I say 1-2 times a day nearly every day is, in fact, excessive, but it could be worse and in my opinion you should start cutting down right now.

What's (possibly) going to happen is that you won't be able to to get off to real women and real sex because it will feel "lacking something", you might not be able to have or keep a proper erection with another person, unless you jerk yourself off, and that's because you're too used to "your own way" and nothing else really feels the same. Whether you are conscious of that or not.

I also can't say anything for sure about the pain but maybe I'll teach you something new right now: blue balls, know the term? When you go through a situation where "everything is leading to sex" you're telling your body to produce sperm, then at the last second, for whatever reason, you don't get to cum, but your children are still there, in a relatively tiny place. It can hurt, a lot. It stops hurting if they get recycled or released. But this can get so bad that even your prostate starts being affected and it's a feeling like you've probably never felt before (yet). And you don't wanna feel it.

You don't have to worry about it (yet) and there are many other factors to consider, but if you're already wondering if this will be bad for you, then it will. Master yourself before you become a slave of yourself without even knowing.