Desperate for advice

So to say my current work environment has become hostile is an understatement.

I was targeted after I become pregnant and had a miscarriage. I was told I wasnt happy enough at work because of my loss, and I let it slide because I'm a push over. I am now called out all the time to the point another employee has asked why I am staying there and being so poorly mistreated.

Idk how to not be a push over, I let everything slide. I have gone to the bathroom and cried and then came out and acted like nothing happened.

There have been messages sent in group chats obviously pointed at me.

I'm at a loss. Idk what to do. I feel like it's not going to stop but I'm also in the position emotionally from the loss that I don't feel like I know how to stand up for myself anymore.