Random Nausea and Gagging (Mostly In the Morning)

[Kalkal24]

It all started about Wed (02/08/17) morning when I woke up, as soon as I sat up I had a strong urge to gag and did but didn't vomit. It was an unpleasant feeling of course that lasted through the evening with me having no appetite. What I find odd is that it pretty much completely disappears by around 8PM every time! Now about a week later I'm still experiencing this which is why I came here seeking help. I've been spending hours on the internet to find the cause for this but can't seem to figure it out. People say it could be GERD, ulcer, anxiety, parasite etc but I'm not too sure as my symptoms matches every one of those. In addition to the gagging and no appetite, I also feel extremely fatigued all the time and sleep does not help it. I went to the doctors yesterday and he told me it was the "stomach flu" and ordered a blood test so I'll see the results in about a week. In the mean time, I've made a list of my lifestyle choices to find the culprit. 1) I'm a frequent marijuana smoker for only a couple months as it helps with my ADD more than Adderall; 2) I've been prescribed Adderall for years but that has never made me feel like this and I prefer marijuana anyways so I don't use it as often; 3) The Adderall makes me skip meals sometimes like once every week; 4) I'm ashamed to say this but I've been downing like 12+ gummy vitamins everyday for the past 2 months (I THINK THIS MIGHT HAVE SOMETHING TO DO WITH IT). I've been researching the symptoms of vitamin overdose and it sounds like what I've been having. Could vitamin overdose make me gag in the morning then subside at night and could it affect me for this long (a week)? Like many others who have gag reflex problems, it affects almost every aspect of life and I just want it gone. Any responses would be much appreciated.