Really struggling at the moment. My best friend told me last week she has started trying for a baby…

Really struggling at the moment. My best friend told me last week she has started trying for a baby and I'm finding it so hard to be supportive. (she have me a lot of stick the first time I fell pregnant and said I was silly etc) and now she is doing the same thing I did. I feel like she is making a competition and it's making me feel really down. How can I say something to her without sounding like a total b**** 😔