Is this worth leaving

Guys please go easy. I need advice no judgment. My partner and I just got back from Colorado. We took a little trip as a get away cause this year has been literal hell. He got super sick from the altitude. He’s never traveled before and it kicked his ass. I did all the driving mostly 10 and half hours back, then today we went to pick our son up from his grandmas. It was another 4 hour drive there and back. My daughter was giving our son some Nutella and it was a little messy and my partner got so annoyed. He made a negative comment as soon as we got to the car like “ I don’t know why you thought it was ok to give him freaking chocolate before getting in the car” cause the our sons hand was a little dirty. Nothing crazy just had some chocolate on there. Everyone at the house thought it was funny and cute! My son is 2. He’s not a baby or anything. Lol, anyway I got frustrated cause small back story is my partner ALWAYS is making comments or negative about everyhting. I finally snapped and I was like “ why are you always have to be so negative about everything!!!! Why was the comment needed?! So what if he got a little dirty he’s a toddler everyone was laughing and in a good mood but you, your the only one annoyed by this!!!” And it started a fight. The rest of the way home he sat there and didn’t sY a word and looked out the window. My toddler kept saying hi daddy and he would ignore him. We get home and he goes straight to our room and throws his phone at the wall hitting himself in the face and is crying/getting angry.

I’m dealing with a tired toddler. He needs a bath, we were suppose to go to the store for milk, I had to make dinner for him still. I’m doing everything. He’s in the room going crazy. I don’t have time to go sit and talk with him!!!! I feel like I’m dealing with another child. He’s 26 years old for god sake. I’m dealing with the crying toddler who needs to get ready for bed and I don’t need to deal with him on top of it at that moment. So he comes in the bathroom with a sad look and said “ just admit you don’t love me or want to be with me anymore” like what??? I said “ that’s not true at all! I was frustrated by the negative comment you made that’s all. He then proceeds to say I’m shutting his feelings down by saying “ that’s not true “ at this point it’s immature he’s acting insane. I don’t know what’s going on. He goes back to his room, I texted him basically saying this ( down below ). He had nothing to say and he’s been slamming doors and being so mean. I got my son down to sleep and He slammed the front door and woke my son back up. He won’t talk to me now and he’s acting like a little child! I have heart issues. I’m struggling to breath, I’m going to be seeing a cardiologist soon and my HR is going up to 175-180. I’m trying to sit and breath and calm down and I’m having to be on edge cause of him. I’m so miserable. I would love to be a happy affectionate understanding person, I just can’t deal with the negativity with him. And he never acknowledges anything he does. It’s always my fault. We have 3 kids, a house, been together 4 years. I don’t wanna just pack up and leave but I can’t live this way anymore. I’m miserable and so emotionally detached from him. It’s like walking on egg shells all the time. He complains I never show him love but Everytime I try to express the way he makes me feel and to work on changing it he gets mad and feels like I’m attacking him? I just don’t know what to do.

Here’s the text.