When is the right time

When is the right time to tell imediate family your expecting. I'm talking about parents, siblings, grandparents (who raised me), and aunts and uncles (being that my grandparents raised me they are like my siblings)...and my SO family. I've heard people say after 12 weeks because the chance of miscarriage drops, althought bad things can still happen at any point during a pregnancy. However I was thinking 4-6 weeks, because if we were to miscarry we would still be parents and I would love to have a great support system.