My Rottie / Beagle mix, Molly, has been yelping loudly after I put on her harness to go outside. I make sure it's not pinching anywhere and she usually yelps as I'm going from a kneeling position to a standing one. She also yelps if I'm standing above her and move my hands too quickly. I have never stuck my dog, ( nor would I ever ) other than a light nose tap. She also has a nervous stomach so when she gets too upset she barfs everywhere, sometimes 16 to 18 times until there's nothing left. I'm worried about her, I love my Molly - Ollie and, if this is what I think it is, I want to do everything I can to help her. Any ideas would be greatly appreciate.