Should I be frustrated?

Two nights ago my SO and I were having sex. But since we're staying at his moms house for awhile, we sleep on the couch. Well we decided to have sex, but I wanted to switch positions and he didn't want to get up to go to the bathroom. I was tired of being on my side. After I ask him let's go to the bathroom he likes no I'm going to sleep. I got pissed. Not to sounds selfish but we haven't had sex in 2 week before that. Maybe he didn't want to be squished in a small room, maybe I did something