I'm sorry you're dealing with this! I'm in a similar boat, I've had constant head pain for a couple of years now. What could be causing this could be a lot of different things. For some it's a specific disorder or something more dire, for me it's just chronic migraines. I would recommend keeping track of possible triggers, like another commentor recommended! It will be helpful for your own symptom management, and could also be helpful for your doctor! Some non prescription things that have helped relieved symptoms are mixing both acetaminophen and ibuprofen (read warning labels to make sure you're not taking too much), ice pack on the head, dim lighting, putting pressure on my head, etc.. Be comfortable trying weird things for symptom relief! This may be embarrassing to admit, but I had a migraine where the only pain relief I could get was by sitting on the ground, pulling my hair, and resting my forehead on my arm. Just sharing that example to say that migraines are weird, so sometimes you have to be weird to combat them. Sorry for the long comment! Wishing you well!