Back to work blues

So my fiancé had agreed to work overtime so I could take 12 weeks maternity leave (I only got paid for 6) well 10 weeks in and he can’t stop complaining about paying for stuff so instead of talking to him I stupidly told my boss I would return tomorrow. I have been extremely depressed and anxious because I had in my head go back date December 9th. Any advice besides the first day back is the worst. I’m

A teacher so I am already exhausted thinking about taking care of my 2 under 2, the fact that he is going to pay more for daycare this week than we would have for my gas because I went back early and just the fact that I have an emotionally exhausting job. Oh and we’re planning a wedding. Any one know of any good online jobs besides VIP KID and MLM.