Help!

Ka

My fiancé is being hella weird about me, he's like saying that I am acting a certain when I'm not. For instance like he says I'm having an attitude about something when I really just am confused as to why he thinks I have an attitude, like because I paused for a minute to think of the response or I don't say something right away he jumps on my case. Then when I am slow at moving because I'm tired, he says that I am being slow because I don't want to do anything and that I'm being lazy. WTF how do I make things better? I try telling him I don't feel that way or telling him I'm tired or something and he says stuff like fine I didn't want to hang out with you either, it's bull. Any advice or tips? It happens all the time now.