Guess I should post an update so people don’t worry. Alex is OK. He seems to have suffered absolutely no permanent ill effects from his little adventure other than a couple of hours at the hospital and a bit of crying. We still may go see his primary to make sure.
On the good side, he got a whole new bunch of toys when we went to buy him a new stroller and car seat.
In unrelated news, we started him on solids (rice) which seems to have stopped him up a bit, and he seems to be teething, which means that he’s now acting like what all our friends call ‘a normal baby’ and keeping us awake at nights worse than he did in the beginning. He’s sitting on his own, and getting around to crawling.
We’re doing OK too. A bit shaken that no matter what we do we can’t protect him from everything. Other than that, lack of sleep is getting to us again.
Alex is starting to develop his own personality. He likes certain things. He prefers certain toys. He reacts with indifference to some things. It’s cute. Some of it seems like it’s obviously a product of how we treat him and what we do with / to him. Other things are a complete mystery.

Rice cereal is one of the traditional foods to give to a baby or small child when s/he has diarrhea. It still is a good choice for first solid food, but his intestinal reaction to it isn’t surprising.
And, for what it’s worth, we give rice to our greyhounds for the same reason. ;-) They often have a bit of trouble initally accomodating new food when retiring from the track.
Rice makes nice poops though when it comes through! Not as nice as a dog fed the “raw diet” (whole turkey wings, bones and all, etc), but that’s another story altogether.