jane,

my take is that if i were you i'd go see my dr for an exam.
he might do a scraping and look at the skin under a microscope.

you could find out if you're having some kind of allergic reaction to something, or maybe a med.

and, you want to be sure that you don't have something that others could catch, especially children.

since it's the wk/e you could try to find a free standing clinic and run in there.

hope it's nothing. you might also try to reach your pcp over the phone.