I hit my head quite bad last night, the car boot shut on me by someone really hard by accident.   I came into work today, but feel really sick and dizzy and have a pain like a knife has gone in to my head.  I have a soft spot where i havr the bump and when i talk eat it hurts more.
Take some NSAID like combiflam three times a day after food for 5 days and do cold fomentation at site of injury . You will be fine in 3-5 days