Do you really feel like this could be a parasitic issue even though he hasn't regurgitated since 1/11/18 and has been keeping meals down since 1/29/18? I wonder if the 3 Panacur treatments the vet gave me back on 1/18 are still good. I had decided to not give them to him at that time. I'll have to call the vet on that one... Having him checked for parasites would be very difficult since he isn't defecating...