Job trying to fire me or get me to quit before leave.

It's a family run company, and for the last 2 months they have been doing, and saying many things to get me to quit, while also trying to find a reason to fire me. I loved my job been here almost 4 years, and now I can't sleep, and in terrified to get up and go there every single day. I'm really not sure what to do. I'm 32 weeks today, and every time I convince myself to suck it up, they do something else :(