From reading your post, you're not talking about the hotfoot. Is it a "bone pain" or a "muscle pain" or a "nerve pain" ? I'd book the podiatrist appointment now, they probably won't see you for a month, anyway. If this is still bugging you after 5 days, it's *something* real. does it bother you in regular shoes / barefoot? Usually this stuff is either from trauma, or it's some stretch of plantar facia inflammation. Another day or two and I'd definitely go to urgent care and get a script for some imaging.