Any stay at home moms feel sad when going back to work?

I’m going through it rn I feel like a big baby :( I start work next week & im just feeling so sad bc I haven’t told my LO’s yet .. like my husband is excited for me bc he knows it’s a good job but i literally had to go to the room to cry! I have 2 under 3 & I’ve been a stay at home mom since my first was born … im super bummed out I wish I waited to go back to work but honestly it’s hard bc a couple weeks ago my husband & I had a huge argument where I basically got kicked out & I cried sm bc I didn’t want to leave with no $ so this is the main reason why im going back bc I want to be able to provide for my kids if something ever happens between my husband & I .. please I think I need some cheering up or something:(