I get extreme fear, just going to the dentist the one or two times a decade, so I can feel your pain. Well not the actual pain, but the thought. I have not had the good fortune of seeing you here, as I think i came in as you were being distracted. So I guess its Hello!, and welcome back. The gas won't take long, and as you know, there are plenty of people here to help you get gas, and what to do with it!
Never pet a dog that is foaming at the mouth.