My grandmother passed away today. Mom and grandma forbid me from going to…

My grandmother passed away today. Mom and grandma forbid me from going to see her or attending her funeral, saying that pregnant women should never look at the dead and the baby could be born dead. I don't know if it's true... I really want to see my grandmother one last time. My husband also forbids it, saying he gets more nervous when he sees her. Has anyone ever encountered something like this? (I hope not)