Is it normal that red wine makes my headache go away

I dont drink often in fact its only a few times a year because I suffer from tension headache, migraine and a sensitive stomach. But sometimes when I have a mild headache I still have a glass like last time I did because it was my birthday and the headache vanished. Its a risk though because if the mild headache is the beginning of a migraine things go considerably worse and one glass knocks me out with horrible migraine and nausea but that isnt often since I dont get migraines often but its partly why I dont drink often because I have almost constant mild headache everyday all the time which I have been told is because I am tense a lot and I need to relax my posture.