I'm being pushed out of my job after learning I'm pregnant

So guys, I'm really in a very frustrating situation. Ever since my manager found out that I’m pregnant, she has been harassing me at the workplace where I’ve been working for two years. Today, she literally came and mumbled something like we can't continue like this. However, there hasn’t been any drop in my performance at all. I don't know if I should just take my severance and leave or if I should resist; has anyone experienced something like this before?