This is ridiculous but I got in to a fight with my partner over changing the cat litter box 😩 I'm 22wks pregnant and whilst he was changing the other one downstairs (which I appreciate ofc), I asked him nicely a couple of times to remember to do the upstairs one for me. Cut to 10 minutes later when he climbs in to bed without having done it. I gently remind him (again, nicely!) that the upstairs one really needs doing please and he gets snappy and says that he's not doing it now, he'll do it tomorrow when he gets home from work, end of. He knows I wont be able to resist leaving it that long as he didn't do it last night either and I think its unsanitary for both us and the cats to leave it. I explain anyway how I feel. He then shoves his headphones in and ignores me. Something he does to cut me off. I tell him I feel irritated and upset that hes left it to me to struggle with tomorrow on the stairs and I feel like he doesn't care sometimes. (Earlier he also left me to struggle with starting to put a cot together for 15 minutes before he begrudgingly asked if I needed help because he was busy playing a computer game...) He says the same as before and then gets angry with me and tells me I'll have to f'ing do it myself then etc 😳 we argue a bit more and then I told I didnt want to sleep next to him while he was being so nasty/uncaring. So here I am tearful and uncomfortable, failing to sleep on the sofa. Also bothered by the fact he hasn't checked on me (I have epilepsy which is made worse by stress too). Yet feeling like I'm the asshole here. AIBU? Should I apologise?