Feel like our relationship is falling apart

Kz • Baby boy #1. Married to the love of my life. Here to make mommy friends.
Our baby is 10 days old and we've been home for a week. He's an amazing father and is very attentive to everything our son needs. Things between us just don't seem right. He's been very snippy at me and it seems like he doesn't want to spend time with me.. Just play on his phone. It's really bothering me but I'm not sure how to bring it up..