Question 2: She also has some swelling in her face. A couple weeks ago her cheeks swelled up, and they've been getting better and worse since then. When it first started, it was her whole cheek that was swollen. Now it's just the part near her throat, and it's shaped like a half moon. The right cheek is more swollen than the left. There are two lumps on either side of the bone that runs down the middle of her face. There is also a lump under her jaw. The lumps I just mentioned appeared about a week ago.
I drew a picture so you guys would have a better idea of what I'm talking about: http://i36.tinypic.com/11liuc5.jpg
It looks pretty much the same on both sides.
She has no fever, no runny nose, her eyes look fine, her appetite is fine, and there is no heat in any of the swollen places. I haven't changed her feed, haven't put her in a different pasture, she hasn't been around any strange horses, and she has been vaccinated for strangles.
The vet is coming out to look at her tomorrow at 2pm - I just wanted to see if anybody had any ideas before he came out. I will update you guys tomorrow after he comes out.