Your dog doesn't normally follow you around the house? She might be in pain or at least some discomfort. Dogs try to "tell" us they need help by acting in manners to get our attention. FOr instance, if one of my dogs needs to go out urgently, she'll run up to me but wont let me pick her up. Each time I reach for her, she'll back away. When i get up off my arse , she'll lead me to the back door to have me open it. Your dog could have been trying to tell you that he has a hurt. A vet check would not be a bad idea of this is not normal behavior for your dog.
Here's a scary story/ experience I had with my own dog that hopefully will give you a sense of what I am talking about - when something is off - read and "listen' to your dog:
Rena Barnett?s blog - Vox