Should I stay or go?

My fiancé of just over 5 years let’s call him L. Him and I have a son who is nearly two, a house (a gift from my grandad to me, so it’s in my sole name) and he is our financial provider as I’m a student and mum. We are hoping to getting married this year but it’s only because I want to get married. Whenever I try to talk about it with him he gets all stressed out like he doesn’t want to do it. I thought about delaying it but my Nanna isn’t very well and I need her to be there and he said that was fine.

It seems like everyday we are arguing, I can feel him pushing my away and I think I’m doing the same thing but I don’t know. I always try really hard for everything, he wants to change job and study so I supported him anyway I could but it didn’t seem like it mattered to him. We got into a few really bit fights today. One earlier because of an accident we almost had while he was driver and then him saying he doesn’t want to marry someone who’s against him, but he later apologies after leaving me with the little one for 2 hours to make dinner, tidy and get ready to go out as I was going to look at a new nursery. When he comes back he eventually says sorry but still doesn’t offer to help.

Our second fight was when I got back during dinner. I tried to be in a better mood and joke around, at first I thought he was joking back but then he just got really angry. The argument continued into the kitchen where he proceeded to very strongly punch our slow cooker a couple of times. He has done this before and broken a door and ceiling lights. I grabbed my sons hand and said please leave. He has gone out and will come back later.

I don’t know if this relationship is toxic. I love him with all my heart, he is the father of my child, we have been through so so much together. I don’t know how I would be able to live without him but am I making him sad which is why he is doing this? I just don’t know!