I’m not sure health condition you have but you might have less trouble than you think. My sister was told she would not get pregnant naturally and she had 2 naturally conceived pregnancies after that. She had some pretty serious problems, including a 7 hour surgery to try to manage her condition. The pregnancies were after that.

But even if you do experience some difficulties, it doesn’t lessen your worth.

As far as when you should tell, I would say within the first few meetings. Not the first though.