Will masturbation lead back to porn? Feeling frustrated with girlfriend's low sex drive

I need some advice. I'm on my best ever no porn streak of 33 days, and although I never intended to stop Masturbation along with the Porn, it kind of happened naturally.

It's been really good for my sex life - I've found that by cutting out porn and masturbation I have began to find my girlfriend much more desiable again. The problem is, she has a much lower sex drive than me. She enjoys sex, but for her once or twice a week is fine. That just isn't enough for me though. I'm considering masturbation on occasion to help with the feelings of frustration when I'm ready to go and she is non-responsive (which is most mornings and nights). But my fear is that masturbation will only lead back to porn and all the hard work i've been doing will be for nothing.

Does anyone have any experience with this? Any advice from people who have been in this situation would be appreciated. Thanks