I have postpartum depression/psychosis, is this a hormonal imbalance I can cure?

I have a six months old did a c-section and 3 days after coming from the hospital, i felt stressed, sad. I was not treated good in the labour room and after I had the baby.
While pushing I heard like something cracked in my lower back. Then I had suicidal thoughts, wanted to hurt other people and the baby. I was just overwhelmed. I have postpartum depression/psychosis. I have been going to several doctors and I have been on these medications: Valium 5mg, risperdone, epilim quetiapine amitriptyline, flouoxitine, stimuloton. These are both antidepressants and antipsychotics and none of them worked. I think my brain is chemically imbalanced and it might be from my hormones. They were not tested. They have said why I am suffering from it is because I was not ready for the child and blah blah blah. Btw I think it is more than that. I think I might be suffering from hormonal imbalance. Cause a lot of ppl has gone through more stress than me and they were not diagnosed with this.
> If it is a hormonal imbalance, by curing it, can it cure depression
> What do u think?