When doctors don’t know a lot about infertility?

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I’m hearing a lot of stories about how women with infertility issues go to their doctors and only hear words like “you will never be able to have children”. And they end up pregnant a year later. What is you ladies opinions on this? Are doctors more educated about infertility than they use to be? My mother was one of those who was told they couldn’t have children, and here I am!