Last night, I was walking with some friends on the side walk and tripped over an uneven pavement causing me to fall hard to the ground. I scraped by left knee, left shoulder and left side of my face and hit the pavement with my head. When I got up, I was a little dizzy and head was throbbing and hurting. It is a little difficult to raise my shoulder I try to raise it above my head. When I got home, my husband did clean the wound with peroxide; added ointment and covered it up with gauze. My left shoulder was scraped and tore off some skin causing some oozing which is the cause of changing the gauze. I woke up this morning with my head still hurting. I did have blurred vision, but can see normally now. I have been taking ibuprofen every 4 hours. Could I have a slight concussion?