Worried my headache is something serious!?

I have had headaches since i was about 13 or 14, but they were always tension headaches on both sides of my head in both temples. Recently I have been having headaches only on the left side of my head by my temple & back on the left side of my head. For the past couple of days I have had one that is very very... show more I have had headaches since i was about 13 or 14, but they were always tension headaches on both sides of my head in both temples. Recently I have been having headaches only on the left side of my head by my temple & back on the left side of my head. For the past couple of days I have had one that is very very small i can barely feel it but it’s there, on the left side of my head. It goes away for a little while & then returns. Please help:(
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