Hello. I have had a sore head/ headache for about 10 days. It is located on one side of my head and it is making me feel dizzy/nauseous. It seems to be worse when I turn my head or stand up suddenly. It almost feels like my brain is playing catch up with my skull as it spins round after it. I can't say it is crippling but it is persistent and the dizziness is really unpleasant. Any thoughts please?