I'm a piece of shit... I just need to vent.

I just need to vent. I said goodbye and hugged my dad because he is flying out tomorrow for his operation. I started to cry (operations freak me out). My mum and dad left, it was just me, my Fiancè and my sisters. I looked at my Fiancè and said I'm going ( going back to my house because I live next door to my mums) I wasn't angry at all. I just said to him I'm going. He yells at me in front of my sisters, saying ' I just knocked off work and you're angry, youre a fucking piece of shit, you fucking grumpy cunt. Keep treating me like this and watch what happenes' I was shocked.. I'm not angry at all, I needed to go back to my house as I need to cook dinner. He started at his new job today and every time he gets a new job he always says 'watch what happens' like a threat... ugh I love him so much, I just don't know what to do.