Have had dull head ache for approx. 3 weeks, along with generally feeling unwell, tired, weak. Pins and needles in left arm and occasionally goes numb. Dull head ache moves around from behind the eye to side of head - comes and goes, but never really goes away. Have had ct scan on the brain, which was clear. Have had antibiotics and cocodamol pain relief for a week, hasn t made any difference. Any ideas?