I don't have PPD but I had some pretty severe paranoia with my BPD.

It took them forever to get me properly medicated because I kept thinking the pills were some sort of mind control drug that would make me forget what 'they' were up to.

Eventually I decided that it was too tiring knowing what they were up to and that I didn't care what they were doing anymore, I just didn't want to know.

Even if you're right it's much easier being a dupe.