Daydreaming about a disaster?

Recently I’ve been hoping that something bad would happen. I feel awful saying it but every time I get in my car I just wish I’d get in a wreck. Or I want to run my car into a tree. Not bad enough to kill me but bad enough to hurt me. I’m on all kinds of antidepressants and antipsychotics. I know this isn’t normal so what should I do?

Side note: I’ve been struggling with PPD and PPpshchosis