I have developed a rash on my upper inner arm this evening. Spots are not raised but very red. Not disappearing when I do glass test. Should I be concerned? I feel well otherwise (bit of a cold coming on I think but just sneezing at this point). I am pregnant and don't want to take any risks.
Spots are very close to a wasp sting but not surrounding it. Sting is almost a week old though so probably unrelated.