Feeling lost.

I feel like my husband has been snappy at me for like a week. Idk what I did. Nor does he say there's a reason for it. Its not constant its just off an on. This is a time when were supposed to be close an all I can feel like is keeping my distance. Giving him more space. I want to snap back at him for it but don't know if I should. What do I do? I told him he obviously needs some space from me an that I'd leave him alone an I shut off my phone. He blew it up trying to be sweet. Idk what to think but I'm trying to control my hormones an not go off the deep end.