I had headaches for many years. Would wake up with them. It was hard to get to the bottom of what was causing this and what could help. Taking ibuprofen or acetaminophen didn’t really help much. I now have less headaches but still get them when it is going to rain or it is overcast (barometric pressure seems to affect me). I was diagnosed with iron deficiency, sleep apnea, and cervical spondilytic myelopathy (had surgery on c5c6) and morning headaches and neck/shoulder pain are much less frequent. I also had my thyroid lobe removed due to a suspicious nodule which may have helped (was 2.5 cm and it was affecting my swallowing and speaking so not sure if it was pressing on anything affecting blood flow and causing headaches).