Daily head pains that worsen when i lie down for 7 years. could it be a brain tumour? good neuro and blood test.

Head Pains=Headaches: If you have chronic headaches for 7 years, it can not be due to brain tumor. Most headaches are caused by pressure/stress. They can be either labeled tension headache or it could be migraine headache. You need to consult a neurologist or go to a headache clinic where you can be seen by a specialist. Migraine headaches have good treatment with modern drugs called triptans. Ask you doctor about this.

These are likely: Check neck, jaw, dentition, sinuses. Very unlikely to be brain tumor, but have seen a colloid cyst of third ventricle do exactly what you describe. If no prior mri, you may be will reassured with normal study, but even if you have such a problem, your exam might still be normal to the unsuspecting doctor.