Scared of getting pregnant

How do I get over my extreme fear of getting pregnant again? I just had my first 3 months ago, she was a surprise baby. I love her more than anything of course but I do not want another at all or for years if I decide to. I’ve had severe post partum depression that started during my third trimester so I cannot handle that again or another child. I got an iud at 9 weeks pp, everything combined has kind of killed my sex drive anyways but I barely want to do anything with my husband because I’m so scared of getting pregnant again. I don’t know what to do