Headaches - monthly once. Sinus?

I am getting headaches once a month. Headache usually is around the eyes or behind the eyes and back neck. I apply balm and keep warm compress and sleep. It usually lasts for a day or 1.5 some times. I have had such headache earlier but very rarely. For the past year it seems to have increased and at least from January 2022 it is occurring once a month. Trying to keep a food journal but not seeing a pattern yet. Usually it goes off with applying a balm and sleeping in dark. Two months back I had it along with nausea and I Vomited and I had some left over pain the next day. This was after a travel. A month back it was just neck pain which went away after sleeping. Now again I have headache with nausea. Makes me restless and I apply pressure to feel better. Is this migraine/ sinus? Since I have been able to manage so far with family help, yet to visit any doctor. Any tips and advice to watch out for and when to consult would be helpful.