I'm telling my parents about the pregnancy on Christmas Eve but I don't want to tell the rest of my family. Christmas Day we're at my parents and I have a bad aversion to veg, especially broccoli so badly that I heave if I smell it uncooked let alone cooked on a big plate at the table! 
If I go I'll literally have to leave to vomit constantly and to top it off we'll all be crammed at a tiny table so I'll have to fight for an exit!
How do I get around this?!
I've had a loss previously and I really can't make it public with everyone just yet.