I Started Notice Having Very Tinny Red Pumps Over My

I started notice having very tinny red pumps over my lower arms 7 days ago. Next morning, I saw the rash clearer, bigger, & spreaded up to upper arms. Took some Banadyl and noticed it looked better so stopped the medince. Four days later, I felt very tired and saw the rash still there. On the fifth day, went to Wall Green for help and they thought I might have chicken pox. Since it is the weekend, can not see doctor until tomorrow. Wondering if I have chicken pox as the rash appears for 7 days already and I only feel little itchy. I am 50 years old and don't know if I had ever have chicken pox before. Please help, thanks.
MTran