These petty arguments can really build up and help you lose sight of why you guys fell in love for the first place. First things first: a relationship is supposed to begin because you enjoy each other's company and HAVE FUN TOGETHER. Have you guys not done anything special recently? I'm not saying a romantic weekend away will solve everything and it will be all shiny and new again, but if you can go out and leave all your other cares behind, it will help you build up your stamina again to face these issues. If you can make it through a weekend without the arguing.
Another possibility would be to give each other some space for a while. We usually don't appreciate what the other person does and provides until they are out of the picture. I don't mean calling and seeing each other every day. It sounds like a "break" in a way, I guess there is no positive way to spin it. But it's another possibility. Risks are involved either way.
Waking up next to a beautiful girl,
Step outside and say hello to my beautiful world.