Help!!

One of my very very very good friends is trying to have a baby!! She has lost one less then a year ago at 20 wks... She is 45yrs old.. She has two kids already one grown and one in school still... Her daughter is pregnant and she is happy and fine ... She is trying to get pregnant again and is going through treatment with the doctor to do so.. Well I just found out I'm unexpectedly pregnant... How do u tell her with out upsetting her... I would never want to hurt her feelings or make her sad!!! She is an amazing woman and I always tell her she will get her baby when gods ready... I tell her she will get pregnant before she knows it and stay positive.. How do I tell her I'm pregnant ??!! She is an amazing person and woman amazing!! I really don't know what to do or how to do it