Are arguments normal?

My boyfriend and I have been dating about 4 months. for some reason, the past week and a half, we have bickered at each other more than normal. some times we'll have a little disagreement here and there but it's nothing like right now. I don't know what is triggering this out of balance and it's not even a bickering session about something legit. It's over petty stuff. I think this is just a phase; am i correct? I want things to resolve and move forward in our relationship (and I know he does too). are arguments normal? How do you make them occur less?