I have sinus congestion, runny nose, a dry cough, sore throat and diahrea. Yesterday I felt very clammy, hot and almost passed out. My friend also is sick. He went to the doctor and they gave him a C pack. (don't know what that is) I don't feel sick enough to go to the doctor and was wondering...I have some amoxiccillian left over from when I was sick before (500 mg exp 09/14) and was wondering if I can just start taking them.