Job hunting while 20 weeks pregnant?

So unfortunately I'm in a terrible situation. I started my job as a receptionist at a hair salon over a year ago and told them my plans for starting a family and wanting to be in an envriornment that was supportive towards that. The job was great and my coworkers are all lovely. After 6 months or so we conceived. After I told my manager I was pregnant she has cut my shifts down to 3 days a week and has been writing me up for any little mistake. Today she confronted me and told me they are considering firing me and would have already if I wasn't pregnant (bullsh*t). It's so terrible to be in this situation. I've done nothing 'wrong' & they are clearly signaling me out and even my coworkers are upset about it, but again, nothing can be done. She is management and what she says goes. So now I'm stuck not making money (hours have been cut for over 2 months) and potentially being fired at any minute. So I want to start job hunting but I'm pretty visibly showing now that I'm so far along. Any advice or recommendations on places that hire pregnant women? I'm thinking of a retail environment or something not so heavy labor. I'm 24 years old, and am insanely reliable. The only thing is I don't know if I'll be going back to work right after baby I may take some time off. What place will want to hire someone for 4-5 months? I'm so stressed. I thought I was doing everything right preparing for baby and now this. I appreciate any feedback for help. Thanks in advance!