Am I wrong?

Me & my husband don't have sex very often. Maybe once a week to once every 2 weeks. He use to watch a lot of porn but no longer does(or so he says, anyway). But my problem is, I don't even want him masterbating because I feel as if that's causing our sex life to be so dull. I know that it's normal & healthy. If we had sex on a regular basis, I wouldn't care how much he jacked off! But when it's ruining our sex life, I have a huge problem with it. I just feel like something is wrong with me? I don't even know that he does it often, I'm just assuming because what man doesn't want sex more than once every 2 weeks? Ugh