my siam. is licking alot pulls out hair on her belly and under the bind in there front paws

My 7 year old pitbull recently went about 4 days (maybe 5) without defecating and eating minimally (no dog food, just occasionally would sneak some people foood) and escessively thirsty and peeing excessively . I made a vet appointment, and the day prior to the appointment she defecated, and began to eat (not much for the most part, juat a few bites here and there and was back to being herself in regards to personality. To be safe I took her to the vet anyway as an appointment had already been made. The vet diagnosed it as pancreatitis, noting that she seemed to have pulled through the worst of it on her own he said and put her on a course of meds (antibiotic and what I understood to be a probiotic) After the first day of meds she again became lethargic, and again won’t eat, not eating is putting it lightly, she has an aversion to it, regardless of what food it is she tends to get up and move elsewhere to avoid it. She is still urinating and defecating infrequently despite diminished food and liquid intake

It came really loose three weeks ago because he fell from my arms it was bleeding
He can walk ect but if you put quite a bit of pressure on where it came out he pulled his paw away from you

Tonight my boxer has started scratching his ear like crazy and crying while he’s scratching. I think he might have mites but when I try looking he cries more and pulls away. How can I make him comfy till we see the vet in the morning