My mom keeps calling it HOOF and mouth

Georgie had a fever this weekend, and we assumed it was teething (she has the bottom two, so the top two are probably next). But then yesterday morning I noticed a spot on her arm, one on her knee and one on her chin. Bug bites? Hand Food and Mouth? (dear god) I called the nurse and she said HFM, but no need to bring her in. Just let it take it's course. No new spots have developed and no fever since Sunday, so I'm back to thinking fleas/mosquitos/please god not spiders. Basically who the hell knows, but whatever it is she's back at day care. Sorry.