I want to run but don’t know where 😔

I love this guy he turned my sadness to happiness I met him 5 years ago and we have been living together for 3. We have a 3 month old baby his first my fourth. Lately we have been so distant we are always fighting over the stupidest things. Last night I said so much to him because I feel like he’s the one pushing me away. I’m Mexican and he’s Chaldean(middle eastern) I feel like I don’t belong here he treats my other children like they were his, but when it comes to me it’s like I don’t exist and maybe it’s me but I’m hurt and when I tell him how I feel it’s so he can know what I’m feeling but he’s response makes it worse. I feel like running so far but I’ve been in a similar situation and I don’t want to end up with my parents again and go through separation again because it’s hard specially with small kids. I know he’s stressed out over a situation his dad put him but why do I have to feel like I’m at fault . He’s pushing me away and he doesn’t care. I’m tired of crying behind close doors.