My mom is stressing me out...

I’m 28 years old and I just found out I’m pregnant after a miscarriage...only my husband knows. My mom called me and started yelling that I need to wear a face shield at work. I told her not to yell at me. She continued to yell and belittle me so I hung up, I can’t deal with stress especially because I recently had a miscarriage. My husband says we need to put our baby first.

Anyway:

My little sister stays with me while my husband is at work because I don’t like being home alone since the loss (I overthink it), and our mom threatened to make her leave tomorrow. My mom KNOWS I am vulnerable and would much rather be around family than be alone. She knows how much I’ve cried when I lost my baby and how much I cried while I was alone when my husband had to work so I’ve been having my little sister (13) stay with me for some company.

She’s furious with me but I don’t want to tell her I’m pregnant yet. She does these things out of spite all the time. What should I do? Was I wrong for hanging up? I thought of my baby first....