I've been having this throbbing pain on the bone area behind my left ear. There's no headache, pain in the neck, etc other than that area. I didn't bump my head recently. I've been in cold environment for over a week (really cold AC in the shop; not adjustable; cold even when wearing thick jacket). I've drank Panadol (a kind of paracetamol) to ease the pain but no use. I've also drank medicine for 'bloat'ness. I don't know what else to do and the throbbing is really disturbing.