Partner is being so different lately

Zoe • 27 years old and engaged to my best friend, my soul mate 💕 1 mmc at 12 weeks and 1 mc at 5 weeks 🌈 my angel babies ✨
So me and my partner have always got on so well we have our moments don't get me wrong like everyone but at the moment he is very hard work he has a throat infection and is so snappy rude abrupt and just mean ! I may sound like a teenager moaning but it's not like that he has had me in tears for the past few days because he just snaps and just doesn't stop goin on at me and then after a while of me getting really down and reduced to tears he will be like oh what's wrong I'm sorry let's forget about it ! It's driving me mad and again to ugly hasn't been any different so far - I want to help him out because he is poorly but can't deal with the snapping ?! Any tips xx