Hi I Fell In The Shower About 2 Weeks Ago.

Hi I fell in the shower about 2 weeks ago. At the time my ribs were not hurting. Then about 2 days later i have a sore spot on the back left side of my ribs. There is no visible bruise but when i touch that spot it feels like a bruise. I can take deep breaths fine. The pain has not improved any. Should I go to doctor or just wait another week or two?