Joy, I would call my doctor immediately, discuss the situation and see if s/he wants you on antivirals now or to get a shingles vaccine. Unless you KNOW you never had chicken pox, in which case you need to check and see if you had the vaccines, kept up to date. According to my doctor, you can get shingles if you have the virus in your system and are exposed to someone with shingles.
Shingles is a terrible kind of pain, and if it isn't treated immediately it can case agony for the rest of your life.
Keep us posted!