Oh Shel!!!! I feel so bad for you!!!
I will be praying for Marcus. I think it is great that your vet thought enough of you and Marcus to have you get a second opinion. Perhaps a new set of eyes & ears examining Marcus will turn out well. On a positive note....the fact that the x-ray's were clear has to be a good thing!!!!!
Don't feel bad for breaking down in the office today. We all would of done the same thing. It is so stressful when our furbabies are sick they are just like children to us.
Keep us posted!!!! I will be praying!!!!