Hello, I'm having a series of issues. Started about 4 weeks ago. I had felt fine that morning, then in the afternoon I felt sick to my stomach. Almost threw up but ended up with just diarrhea. Then took a tums and felt good enough to fall asleep. Then directly after this for about 1-2 weeks I would feel dizzy as the day went on and then would feel nausea from it and then have diarrhea again every night. It seemed like the dizziness would get worse as the day went on. I am an Architect and work on the computer and looking at the screen would make it worse. Well over time that started to get better and ease up and my diarrhea seemed to start going away. This entire time I was trying to eat healthy as to not trigger it and make it worse. As It went away I started incorporating more foods like hamburger and what not. Some things brought it back. So fast forward to today and I am still having diarrhea. Sometimes I have normal BM all day, then the next day there it is again. Like just now I had 2 eggs and some toast and bam. But I know that its not the toast or gluten because I can eat it other times with no problems. Also I'm not really as dizzy per se, but my eyes involuntarily move or twitch. Feels like its side to side and sometimes up and down. Happens really quick but is very consistent. It doesn't happen when I look straight on at something. Only when I look around and mainly when I'm reading or scrolling a web page. Perfect example of what I mean is as I scroll a webpage down and try to scan with my eyes at the content, my eyes jump around and I cant track as well. Normally I can scroll really fast and track everything. Or when, lets say you are looking though Netflix at different shows. I can normally move the scroll thing around quickly and see each show but now my eyes jump around. Also just last night (this is new) when I closed my eyes to fall asleep my eyes were jumping around or twitching with my eyes closed. It was like they were trying to focus on something behind my eyelid which is really weird.

A little backstory that might help. Like I said I design homes on a computer. I spend many hrs a day working with 2 monitors staring at them while I work on CAD. For about 5-6 days before this all started I was working extra long hrs, and drinking extra amounts of coffee. Also drank a few sodas (which I don't normally) and wasn't eating very well- not fast food but a lot of junky take out food. Also I have a lot of stress with my work which I know plays a big part with the brain and gut. So at first I thought I just way over did it to myself. But here we are 4-5 weeks later and its still here.

I can say that for the first 1-2 weeks the dizziness made me very nauseous where I couldn't even work. That's better now and I don't hardly get nausea. But when I eat big meals in the afternoon/evening it usually (not always) will make me instantly have diarrhea. So I thought maybe I had a 24hr bug, plus overdoing it I gave myself temporary IBS-D. Because I can control it if I eat a pretty bland diet. I can go 2 days in a row without "D" but then it comes back if I get overconfident and try to have something risky like a big burger. However the eye twitching is throwing me off.

Oh and this may be unrelated but I had a slightly infect tooth which I had a root canal done on in the 2nd week. I thought maybe that was causing it. Took antibiotics and it didn't seem to help.
Please help! Any advice would be greatly appreciated!
Casey