Had food poisoning and while standing at the sink hoping to throw up, lost balance and fell to the ground hitting back side of head on the toilet bowl edge. I was delirious due to the food poisoning symptoms so I was more concerned about clearing my system and trying to sleep. Later when things cleared up, I noticed blood on the pillow, and could feel the scab and lingering pain on head. Three days after the hit, I still feel a very slight pressure in my head, and occasional instances of slight nausea/ dizziness . Two days after the hit, same thing, but thought it might have been lingering effects of food poisoning and dehydration -- now I don t know. Should I see a doctor? If so what kind? Should I go to the ER? Or am I passed the point at which their could be a serious injury?