Do you ever feel your SO doesnt take this as serious as you?

So my fiancee and i have been together for 6 years i do love him and i am almost 14wks with our third child. He was doing good and working for quite a while, but he left that job and truly hasnt looked for any other. So its all on me once again i have almost left him for this (a long time ago). We just got a home set for our growing families needs but i cant do it all by myself i work as a cna so my job is hard on me as it is. Since i hit my second trimester i feel better, but im pretty mad that i only take it seriously or thats how it seems. Its just frustrating he just got an under the table job which never works for him and he knows that. Im wanting to yell but my point will never get across, been there done that. Maybe im just ranting i dont want to leave him hes not a bad guy but this is just being very immature at the end of the day you are a father you need to help provide. But i dont know how to get that through to him.