Advice please!

Tia

Would someone be able to give me some advice on how to tell my family members about my pregnancy? More specifically, my grandmother. I don’t have a relationship with my parents, but my grandmother and i are close. I have reservations because of the way she has reacted with unrelated news. i.e. If i call her saying, “Something bad happened today.” Her go-to response is, “Oh no, don’t tell me you could be pregnant!” My grandmother is really important to me and i just don’t want to disappoint her. I’m 26 years old, live on my own and the pregnancy was planned. Currently 8w3d. Thank you!