Every few months or so I get a headache, triggered by a combination of lack of sleep and alcohol. I don't drink much, a couple of glasses, a few times a week, but occasionally I drink something that doesn't agree with me and over the next 24-48 hours a headache develops that sticks around for 3 days, i.e. ending at some point on the third day.
Last Thursday I drank a sweet wine drink, brought as a gift, just being polite really, had a couple of glasses of it on top of a glass of wine. Headache started the next day and is still going today, a full week on. It's not an awful headache, a pulsing vein on my temple but I very tired now.
I've had early nights and no alcohol whatsoever, plenty of water.
I'm starting to feel like it will never go away.