Hi!
Your pattern of illness sounds much like mine and many, many of us here. Don't panic about your BUN/Creat. ratio yet there are lots of reasons for it, so I bet your dr. will repeat it. And, they will monitor your kidney function closely and treat it carefully. As my dr. told me, drug therapy has a goal to prevent or minimize kidney damage down the road. I have only had one little and one big episode of tea colored foamy urine that scared me mightily, and I panicked, too.
hugs,
suetoo