Hello, i woke up at 6:30am feeling something heavy was on my chest. i had water then puked food from 3pm the day before. been constipated lately also?

One time is not bad: if you only had one episode, it may not mean much. it seems like a stomach problem, like gastritis or even something like food poisoning however if it keeps happening, you will need to see a doctor in order to clarify what the underlying problem. still seems to be a gastric problem, but now there may be many other reasons for this. you may need a couple of tests to make sense of it