How do I tell my best friend who is struggling with infertility that I'm pregnant?

Shanari
My very best friend is struggling to get pregnant and even lost a baby several months ago. I have mourned with her and I have listened to how hard this trial is for her. She has also talked about how she always feels a sense of jealously when she hears about someone getting pregnant or having a baby.
I recently found out that I am pregnant with my second baby. My husband and I haven't told anyone yet, but I am so nervous to tell my best friend and be sensitive to how she may feel about it.
Does anyone have any advice or tips about telling a friend who is struggling with infertility that you're pregnant?