Had a headache for a week and 2 days and it's sore? Should I be concerned?

I had the worst headache last week Thursday! It was so bad I left school and I came home. It disappered on Friday but came back after I ran fast for about 20secs and it was intense. This was on the right side of my head. I also developed a cold that weekend but it's gone. However Through out the next week the beach ache kept coming and going and yesterday, after a week & a day it came back intense again but in my left side. Should I be concerned and I have booked an appointment with my GP for Tuesday. Also all day today it's been really sore. I have drank a lot of fluids and it hurts.
Had a headache for a week and 2 days and it's sore? Should I be concerned?
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