Pain (pressure?) that throbs & radiates in the occipital & lower temporal regions only when lying down. can't lay supine or reclined. it's been 3weeks

Headache: How long ago it started, is it one side or bilateral sides? Have you had an injury in the past, a fall, or a MVA, days, months years ? Face down does the pain go away? You may have a trigger point, from trauma in the past. You should see a neurologist, have an MRI of the head. A combination of Cymbalta (duloxetine) + Neurontin + Celebrex will help. Talk to the neurologist