My heart is broken

Tonight was the worst night of my entire relationship. I have a 8 month old son. His dad has him and a 15 year old daughter. We are also expecting #2 in November. We have been together 3 years. I got my taxes in feburary. I bought us a car because we haven't had one in 3 years. I got our son a new tv ( front room tv) I got a ps4 , phones and a laptop. I got my son clothes diapers wipes a new high chair ect.... pretty much my whole return on my son besides the ps4 and phones for us. Well I'm a stay at home mom my sons dad works. I have been depressed because my house is a mess and I never get a actual break. Iv never been away from my son longer than 30 mins and that was because I had to turn in paper work and he was sick so I didn't want to bring him out. He's always with me. Don't get me wrong I absolutely love my son and love every second I'm with him. But I'm stressed and depressed. I'm fatter than I was before and I just feel ugly and nasty. Well I finally felt like my self for once getting all I did for us. Well tonight we got in to it. He had been an arse all day literally from the moment he woke up. Well i go get him breakfast and take my son with me. Come back still hateful. He goes to work until 8pm I brought him lunch. He's still mad. I leave it alone. He comes home pissed still so I confront him because my son wanted his dad and he ignored us. Tried to say he was just tired but his body language and tone told me he was being a arse still. We had some words. He throws his phone and puts a whole in my wall. I break his head phones. He goes in to my front room and shatters my 58 inch brand new tv I got for my son just 24 hours before hand. I'm now unsure we can come back from this. I just spent my last bit of money on this tv. My heart is crushed he would even do that. His headphones cost maybe $10 tv cost over $300 on sale. Yes I know I was wrong but he literally took the roof over our child's head putting that whole in the wall. He wants to work on us but it never last. I'm just unsure if I should stay or walk away at this point.

Before

After

Screen popped out.

He said he didn't know he hit it. How do you not know you hit the tv.