Has anyone delt with this postpartum?

Ever since the birth of my daughter my previously diagnosed depression has gotten worse, tenfold, I have started hearing voices and having increasingly disturbing thoughts about something hurting my baby. At my six week check up after she was born my midwife advised me it was only "baby blues" nd it yould pass. Now my daughter is nearly a year and the symptoms are growing even worse to the poing where I'm a captive in my own home scared to go out incase something happens to my baby. I was diagnosed with postpartum OCD I have never even heard of this but my doctor said it was compounded with my preexisting depression. My husband thinks its a joke and even worse now he is scared of leaving me with her. I'm not a bad mom I just need help. Any support out there?