I cracked the back of my head preatty hard Sat night coming out of the er for my foot. I noticed a stiff neck and a horrible headach coming on Monday afternoon. This progressed into excruciating pain throughout the night. I took tylenol and excredrin pm and used an icepack and went back to sleep. have Iprobably given myself a mild concussion. Why did it take until Monday pm to show obvious symptoms also including additional ringing in my ears, lack of appitite, loss of food (it ran through me), some disorientation and lack of equilibrium. I'm using icepacks and tylenol. What's the best way to treat this and how much consideration should I give it? Is bed rest best?