Just need to vent I guess I don’t know

My partner and I have been together for almost 8 years. We get along really great. We had our first baby a year ago and everything was fine I felt like our love grew even more with our baby. We fell pregnant right away by not being careful. When our second baby came this year it just has been constant fighting and arguing. It feels like we hate each other now. Some times we don’t even wanna talk to each other only when we have to. Some times we have a good time but then it just goes back to not talking. Does it get better? Does it get worse? I don’t know