>>>>Hey, not to question you, but I'm confused so I thought I would ask. On the one hand, the foal is so small the vet can't feel it, right? But on the other hand, she does look like the foal is big enough to be showing in her belly and you say you only have a couple months of preparation to get ready for it.
Actually, during the middle stages of equine pregnancy its common to not be able to "get a hand on" the foal via palpation. Its not that its too small to feel-- the opposite, in fact. The fetus/uterus has gotten big enough to "drop over" the rim of the pelvis further down in the abdomen than previously, and until the foal gets even larger, its out of reach "down in the belly". The vet can still usually manually feel the ovaries, cervix, etc-- if the cervix is tightly closed, ovaries not cycling, but most of the uterus not "touchable", its a good bet that a pregnacy is filling that uterus and pulling it out of reach for the moment.