So my dog Sophie had two bald spots on either side of her rump area. I guess she had bit at it. Well one patch grew back in the other I noticed a scab and now the scab has fallen off and this is what is left. Any thoughts in what it could be? She has been acting strange. She has thrown up several times since being here in Michigan. She will boo boo outside but do another not even 5 minutes later and now this. I'm taking her to the vet on Wednesday but any heads up would be awesome. Stress? Stomach bug? Parasite. I gave her a flea and tick bath today.