We're so sorry to hear about little Yoda. Poor little guy.
As a side note, Otis hasn't popped in two days, and he's also on antibiotics for that little incident with the Cesars. I just did a search on Baytril (animal antibiotic) and constipation, and I found nothing. So I think we can rule out the fact Yoda's on antibiotics.
Please let us know how he's doing.