I don't want to alarm you but my Bailey had xrays and they were clear. However, she was still vomiting and so we had an ultrasound done for her. The vets discovered cancerous tumours in her stomach and we had to let her go...there was no hope left.
I'm hoping this is really nothing but I just thought I'd share our experience. In the future, if the xrays are clear after prolonged vomiting, I'm having an ultrasound done as well to view whatever doesn't show up on an xray. As I said, I don't want to alarm you, just share my experience.
Prayers that this is treatable and Sutra gets well quickly.