I did that test thing... to check for lameness. Y'know, holding the leg up real tight for a few minutes then having someone walk her out the second the leg is released. I did it four times, and she didn't limp or even favor the leg at all... so it must not be bothering her.
It's also not really a new thing. My farrier mentioned the puffiness a few months ago, but said that it wasn't bothering her at all, and it went away after a few days.
Maybe it's just swelling from her being worked a little more than she's really used to... y'know, I'm lunging her a bit everyday now (5 minutes one way, 5 minutes the other)... could it be that she's not used to having to trot in a big circle?
It doesn't feel anything at all like the skin it swollen... it literally feels squishy, like there's just fluid/water around/above the joint. There's absolutely no heat in it at all and she's not favoring it at all. It didn't bother her when I pressed it/picked it up... or did anything with it. She doesn't even act like it's bothering her at all.
Any ideas as to what it could be?
I don't think a vet needs to be called in this case, as it's not bothering her, and the last time he was out, it was a little puffy and he didn't mention it... (and he gave her a full checkover in addition to floating her teeth... so it he thought it was a problem, I think he would have mentioned it.).
I do have pictures, but my camera batteries are dead... I'll have the pics uploaded either tonight or sometime tomorrow.