Bombshell and now I'm confused?

I've been seeing a girl for two months now. Last night she told me on the phone that she's been told she can't have kids. She was so upset as I was. We've both said we wanted kids, whether that be together or not. She hasn't told her family and I said she needed to tell her mum because we don't live close enough for us to be together all the time. She kept asking if I would leave her now and I said of course not because I feel a hell of a lot for this girl. Yet it seems too early in the relationship for me to be thinking about what this all actually means. I want to enjoy being with her but how can we have a normal relationship with this hanging over our heads? Maybe my mind will change but I want my own kids someday. I can't know for sure how long this relationship will last for and I realise it took alot for her to tell me. But should I stay with her and see how the relationship goes, hoping that my desire for kids of my own is overtaken by my love for her?