Bubbling sensation under the bottom of my right rib cage

I was diagnosed with multiple pulmonary emboli in March and I am on blood thinners and I am starting to feel a lot better than I was. But I am having a rather odd bubbling sensation under my right rib cage. It is at the bottom of my rib cage and it isn’t painful and it isn’t where I experienced any pain from the PEs. Does anyone know what this could be? 

I would go and get it checked out by your gp. I too had unprovoked bilateral pulmonary emboli last year but never had your symptoms. It will stop you worrying by getting it checked x