I was putting it down to reducing alcohol tolerance with age, although I don't drink a lot, it is customary for me to have a couple if glasses of wine on a Friday and Saturday night.
The last few weeks, I've been fine during the week but come Saturday morning I have a headache that stays until Sunday night. This weekend I haven't had a drink at all but I still have the headache.
It's so bad today that I'm wondering if it could be flu (or that other thing people are talking about) but it feels just like it did last weekend and I've been fine in between.
I have a responsible job but nothing I find excessively stressful and nothing's changed