Job making me miserable.

Annabelle • 20, engaged, England, TTC baby #1
I started a new job almost two months ago, my probation period is three months. The job is making me absolutely miserable. I struggle with depression and anxiety already so the added crap really isn't needed. I want to quit and try find a job I will enjoy, but I'm scared it will make TTC harder. We can manage with just my fiancé's pay for now, but it'd obviously be far better with the two of us working. I don't know what to do. I feel like such a failure.