I usually look at udders more than I do the midsections. I have goats that gave me twins that looked as if they should have had at least triplets; even after kidding. Anybody that needs a baby fix just needs to come and visit me.
We have udders on 2 of the 3, so I'm fairly confident they're pregnant. Since we don't know the breeding dates, the delivery dates are anybody's guess. I hoped to have kids a couple of weeks ago.