We want to tell our parents for Christmas…but

Kay

We want to tell our parents for Christmas, but want to keep it a secret from the rest of the family. We just found out on the 20th, won’t see the doctor until January 4th. I have a history of miscarriages (9 losses) with my first marriage and this would be my hubby’s first and my second, so we really want to tell his mom and my parents, but also nervous to get their hopes up just yet. We also want them to know we want them to keep our secret from everyone else in the family and from family friends. So my question is what would be a good way to tell them at Christmas without the whole family catching on?