I Had A Cold Almost 4 Weeks Ago. My Nose

I had a cold almost 4 weeks ago. my nose is not stuffed, however it still seems to be running here and there, When I blow my nose, it's clear, it's not yellow or discolored. I tap on my sinus and forehead to see if anything hurts, as in sinus situation. I have no pain. Can you please help me understand what might this be?
Thank you