Dogs knowing?

Okay I have quite a few dogs. (9 lol) I'm a dog groomer and trainer and we also breed Bullys. One of our females has the run of the house ( cause she literally does nothing wrong..she's like a bully soldier girl lol) well she has ALWAYS slept on my husbands side of the bed I'm guessing cause it's by the door? Well the last 3 nights she has been sleeping on my side of the bed....this is a dog that is very set in her ways and pretty much has a daily/nightly regimen... makes me wonder...lol this is our first month ttc after implonon :) PLEASE if you have had anything like this happen with your fur babies share :)!! Baby Dust to all.