don't know what else to do!

Do any of you ladies ever need a breather or a minute away from your SO? 
Not necessarily a break, but just a minute to gather yourself before you lose it?
The last week we've been bickering and getting on each other's nerves about the littlest things. 
(An example. We argued over a $5 box of sweet rolls yesterday, FOR NO REASON, and didn't talk the rest of the day) 
When he gets upset with me, he won't talk to me until he's ready to talk to me, and at that point he also expects me to talk to him like nothing's happened, but gets mad AGAIN when I'm still a little upset cus we didn't talk it out. 
I don't know what to do. I'm gonna lose my shit soon.