I'll never get how people decide to have 1 kid, then another without working out the logistics of it. In many cases like this, the male partner carries on with life as if he doesn't have extra responsibilities. It's a simple practical issue.
The practical, logical, fair thing is that you and your husband need to re-evaluate what you both get to do. If the agreement is that he only works and you only mind the home, then you stay home. Perhaps, start something that you can easily do from home just to have extra money or he provides the financial means for you to stay home and save some for yourself.
If that isn't possible and the agreement is that you'll be working and taking care of home too, then he either needs to be working and taking care of home as well or helping to make it easier for you to work and take care of home. So paying for outside help.
Currently, it seems like it's all on you trying to figure life out but this conversation needs to be had with your husband, not strangers on the internet since only you both know your family, income, spending, dynamics, agreement, expectations, etc.