I thought he meant 1 day past the date or something.
It could be a coincidence. There are many different things that cause the feeling of illness. Stress, anxiety, food intolerance, over-eating, eating a lot of fatty foods, eating at unusual times, and even just thinking you are being sick. You'd be surprised. :
I was once woken up every 30 minutes in my sleep and vomited.
Same here (but I couldn't sleep). My whole family got Norovirus or something, worst time of my life. It hurt so bad and I was constantly ill. I fainted at one point after leaving the bathroom. Was so thirsty that I kept drinking mango juice too fast and throwing it up again. But it was kind of nice after hours of tasting stomach acid. :/
Eventually I just kept heaving. My innards hurt like hell. So so awful.