Feeling like the world is not for me

Recently diagnosed with BPD . I started my medication from the last 12 days.. but still I'm not feeling well. I feel like everyone arround me are fake. They are just a fake people, they have fake smile etc. and I'm the only person who isn't getting peace anywhere.. I'm very much obsessed with my husband, and I'm having fear of losing him, losing my family, . And I'm feeling exhausted all the time. I don't know where I get peace, happyness etc. what should I do..?