Dude your 17 lol don't even worry about it. At that age your testosterone levels are the most there gonna be in your lifetime.
Well I certainly understand the concern! Overloading yourself with sexual stimulation can be a big problem, but I am not willing to say that you are broken by any means. I have heard many men talk about masterbation changing the mental connection with sex. I am 34 and I have spent a lot of time talking with people about this stuff, because I believe the parents and peers of my generation spend too much time having orgasms, and not enough time talking about the do's and don'ts associated with our sexuality.
What I have come up with so far, is that if a man or woman spends too much time pleasing themselves, they will gain a sub-conscious understanding that it is one's own self that provides sexual release, not a female.
you might consider spending more time trying to find a way to make your female counterpart multiple orgasms without penetration. Be creative, and unconcerned with yourself having an orgasm, and pay attention only to her for a while. Then perhaps after a time of rest for your body, the raging rivers of passion may flow again.
Personally I suggest waiting until you are married, sexcapades before marriage will certainly lead late late nights.
Best of luck to you.