Hi, I hit the back of my head pretty hard (on the flatter part above where the bone that sticks out behind our skull) stayed conscious but felt a little like throwing up and got sleepy and light headache/pressure. I have had a concussion about 8 years prior in that exact same spot. Today i still have the head pressure, my brain feels swollen inside my skull and I have pressure on each temporal side of brain... I really would like to avoid another mri or ct scan.... Can i just rest and ice and take ib prophin and not die? or is the pressure a bad sign? it almost feels like a stuffy head cold. Thanks!
Ideally speaking you should go for CT brain. I want to know whether you have any vomiting, Chat Doctor.  These are signs of increased intro cranial tension.  Simply taking painkillers and applying ice won't help much. Get a physician opinion at least. He can do your retinal examination to look for papilloma which is also a sign of raised intro cranial pressure.