You Can Wait 'til Tomorrow

How do you tell the difference between a cold and allergies?  I have never had allergies. The television says that ragweed is high and mold is high. I have been sneezing and now coughing all day.
I asked Fran if we could go get me some Kleenex and he said,"Do you think you could wait 'til tomorrow?"  I couldn't believe the sympathy he gave me. lol On twitter, I said," I walk so slow, how in the world can I catch a cold."
Any way, I am sure you all will have a lot of sympathy for me, so thank you in advance!