about a week ago, I hit the back of my head on the corner of a wooden coat rack. I didn't fall, but jerked my head back really hard and rammed into it. it did not form a bump, but rather a dent that has remained sore, but does seem to be getting less sensitive. I have heard that it is good if it forms a bump, but not if it goes in. Not sure if I should be concerned. I have had a couple of bad headaches this week including one yesterday with a bit of confusion. Something I would normally do without even thinking about, I had to read directions two or three times to complete. I do sometimes get pretty bad headaches/migraines, so I'm not sure if this is something I should be worried about. We have also had a bit of sickness going through our house and the headache could be from congestion. I just thought it was a bump on the head...no big deal. Am I right to think this?