For the past two days, my dog has been extremely clingy towards me. She's always followed me around but this has been to the point where she follows me into the bathroom (even though she hates linoleum with a passion) and five minutes ago would not let me shut my door to go to bed. She usually sleeps on the couch in the spare room but tonight kept shoving her face in my door crack and then whining and scratching when I finally did shut her out. Her demeanor has also changed a little bit where she is being very snuggly and extra gentle when cuddling up to me. I don't know what's gotten into her, nothing of significance happened two days ago to make her behavior change. I'm wondering if she could be sick or something?