We're all individuals. I have Bipolar 1 and 4 children. I see my doctor, take my medicine and try to recognize daily that there just isn't a best or worst mother in the world.
I look at the world and there are all manner of people with all manner of issues doing what they can to raise children. It's a terrifying endeavor and not to be taken lightly.
I did not find that pregnancy, nursing and sleepless nights were as challenging for me as my menstrual cycles have been. But then, that's me personally.
I would suggest meditating and praying. Talking to your doctor and your significant other and know that nobody on this planet is really qualified to raise another human being