How to tell my best friend I’m pregnant when she has had 4 MC?

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So I just found out last week I’m pregnant and my husband and I are so excited. However, I’m not sure how to share the news with my best friend who has had 4 miscarriages back to back. She so desperately wants another child (she has 1) and I’m very hesitant to tell her my news. I don’t plan on telling her until I receive my first ultrasound and I know it’s going ok. Any pointers on how to tell her? I just know she will be heartbroken 🤷‍♀️