When to tell family?

I just found out I am pregnant( home pregnancy tests) and I am only 11 DPO. Periods due in 3 days. I was wondering when should we tell our parents? I am waiting for an appointment from my OB as of today. Did you Guys confirm with blood test and USG before telling people?

I badly want to tell them but also want to make sure I am indeed pregnant and the baby is in uterus and not elsewhere. Please help.