I’m currently pregnant and my management has me on a PIP.

I started this job over a year ago. It wasn’t a job that made sense as far as my experience goes, and I should have known better. But, the way it was presented seemed like a great opportunity, and like they were trying to fill for a skill gap on the greater team. The scope and role changed within two weeks of my hire. I’ve been struggling the whole time, as I never received the coaching and training I needed. I tried looking internally for another role after about 8 months, and was called unprofessional. Now I’m about two months away from my maternity leave, and I’ve been put on a PIP, even though they knew I was interviewing for roles that aligned more with my experience. Now I’m blocked from rotating to a new team, and I’m so upset that they wouldn’t let me leave for a role that makes more sense for my experience. I was told I was trending out of it last week, because I’ve made obvious improvements, but my manager was overruled by their manager when they presented evidence of my improvement and asked that I be taken out of the plan. So they’re extending the PIP. It feels like the goalposts are moving. Should I just wait until they fire me? I know they will offer severance. I’m so stressed out and can barely sleep. It’s negatively impacting my health. We can’t afford to live on one income, and the thought of looking for a new job while pregnant seems monumental. I haven’t gone to HR because I know they’re not there to protect employees.