Maybe you should just tlakl to your husband about what you just told us above.
Its clearly define and anyone can set themselves into it and understadn the problem.
You just cant cope with more sometimes thats natural.
Just tell him so and that you are sorry.
You need some SPA and soem oyu time i agree with that.
Cause how can you give him what you do not have and even lack for yourself?
You need to destress a bit have soem space for you and feresh air, and that your husband is part of it wont hurt too.. to achieve that make him part of it by simply asking him if he would like for th etwo of you to have fun and relax together like kid a bit everyday when you come home.
If you can just put it out and laugh about it it will do you a world of good and him too.
The walk in a forest that help to reconnect with yourself and once you did that, you can also reconnect wiht him.