So relieved!!

I'm 7w3d pregnant and couldn't be happier in the beginning it was so hard to hear I might have a miscarriage...but finally today I saw the heartbeat of my baby and was relieved to hear that everything is okay!! I cannot wait to feel the kicks and tell my family!!! When did you ladies announce your pregnancy ????? Doctor told me 10w is okay to tell but I was thinking 12w....?? Also any unique way on telling the grandparents ????