Three months ago I met an accident while riding a bike.Then I had a slight swelling in the left side of my head.after three days consult neurologist doctor told me to take the mri scan.result is gud. But slight inflammation outside skull ie inside also slight swelling . otherwise nothing to worry.dr prescriped oneweek medicine then dr said it was enough before the accident i had a migraine headache . The headache is now as usual but sometimes I felt  pain in that place.whenever i press on the swelling spot i felt mild pain.but swelling clear.now i am scaring.want  to scan one moretime.pls give clarification.