I had severe post partum depression and anxiety. I know what you mean. I always saw my psych doctor after having my babies and ended up in the ward needing med changes. Hopefully it will get better over time. But tbh, raising kids is stressful. Always will be. Stay strong. You got this.
Judging from your posts you seem strong partner and mother as well. You don’t have other experienced women to lean on like your mom.
I wouldn’t go around throwing post partum depression. Becoming parent for first time is always stressful. You’re not used to it. Your experience with schizophrenia doesn’t help much either.