Can I will myself into never being pregnant?

I've always said, "I don't want kids." By that, I meant having biological kids. I'm okay with adopting in the future, but I'd rather get a cat. If I keep saying I don't want kids, do you think it's possible my body could reject giving birth (because I've convinced my brain it... show more I've always said, "I don't want kids." By that, I meant having biological kids. I'm okay with adopting in the future, but I'd rather get a cat. If I keep saying I don't want kids, do you think it's possible my body could reject giving birth (because I've convinced my brain it isn't an option)?

I know women have tricked their brain into thinking they were pregnant, but they really weren't. Could I trick mine into thinking I could never get pregnant?
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