Another weird night

For the past two nights he's been getting up at 11:30pm!!!!! He was screaming both times and two nights ago he let out a big burp. Then last night we werent sure why he got up again and we traced it back to pasta and pizza I had both nights. I had pasta fri night though and he was fine so I think he just got up sat night at 11:30 b/c he had to burp. Last night it was def due to the pizza I had...b/c he was the same way the last time I had pizza...very screamish and had to be fed. Sooooooooo he finally went down at 1:15 until 5:38 adn then again at 6-8:30. Anymore when we have pizza, I'm giving him formula!