Tension Type Headaches..any Advice?

[Hooby]

Out of the blue about a month ago, I developed a tight, dull, constant headache. I tried paracetamol, ibuprofen and eventually cocodamol, but none of them helped. I went to the doctor, who examined me and sent me for a blood test. My results were clear and the doctor said it was tension type headache, and there's not a lot I can do. I try relaxation, mindfulness, good diet, exercise, sleep well, etc. It's still there. Does anyone have any advice or know of any remedies that would work? Thanks.

[Hooby]

Thanks for all of the responses. The cold strip hasn't cured it but does give it slight relief for a short time. I drink decaf all of the time and I haven't used artificial sweeteners, my doctor says my blood pressure is fine... so I am looking into the rest of the advice and hopefully I will come across one that helps. Much appreciated! :-)