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Can one cup of TEA cause a 3 day headache?

I blended two teabags into a coffee mug. One was a regular bag of Tetley regular black tea. The other was a bag of green tea. I did this because I don't like the flavor of green tea, but it's good for you. The result was a strong, but enjoyable cup of tea. No sugar, no milk. Next day, I developed a severe headache that lasted for 3 days. Could the tea have caused such a severe headache? Has anyone else experienced anything similar?