On the first day of school for the term, I had felt a little ill shortly after I boarded the bus.
Now let me tell you something about it.
The bus takes (or rather, used to take) a route that has a heckload of bumps, some especially stomach churning, and so since I had a huge breakfast that morning, I felt a bit queasy shortly after I boarded the bus. It was exacerbated, or caused, or both, by the bumps and so I was not at all feeling good when I stepped out.
I managed to withhold the feeling of vomiting for a short while, until I went to my respective class. There was a new-ish kid in our class, a bit older than me, who was friendly but he started banging on the table I used to place my books on.
Immediately, I felt like vomiting. I was light-headed, and felt surreal: I thought I was walking, but it didn't feel like I was walking, and when I walked, I was so light-headed that I often thought I'd collapse, and I just pushed away the desk with all the strength I could (I'm a pretty weakish guy and when I felt sick, even weaker) and just staggered. I just kept pushing down the feeling of vomiting and I went outside the door, asked the teacher whether I could use the restroom (albeit so soft she just barely heard it) and then slowly made my way to the stairs. The restroom was right in front of the bottom of the flight of stairs, and I grabbed the railings and slowly went down.
It ended with me flinging open the door of a toilet, vomiting twice or thrice, flushing, washing my hands and mouth and returning back, feeling a lot better, albeit with bad breath. (I took an antacid later)
Then there was this other time in a train where I made it a point not to eat a lot because the toilets were in a horrible state and someone literally poo'd on the sides and vomited on the floor, and it wasn't cleaned at all (it was pretty disgusting). So I didn't eat anything, no dinner, no lunch, just breakfast the next morning (bread with some jam) and some snacks.
I got the very same lightheaded feeling, and everything around me was inverted when it came to colors. Yellow was purple, the background was blue, brown was white, black was white, etcetera. I just barely pushed myself off the train. Bear in mind that the train wasn't going to stop for a long time, so I had to haul my ass off the train compartment no matter how bad I felt. I slowly told my mom "I don't feel well", softly, and she just barely heard it. By this time I had got onto the platform and off the train, but instead I fainted for a while.
(When I had fainted everything was totally black, and I couldn't comprehend anything and was like sleeping -- I wasn't thinking, and I wasn't dreaming, nor could I do either, just in an "empty state", so to say, the same thing that happened when I had a high fever)
It wasn't long before water was sprinkled over my eyes, and I woke up slowly to people who very shouting around me, and I was given some chocolate and made to sit on the cargo thing. I hated all the fussing, since all I needed were those drops of water. I told my parents and my other relatives I was okay, but they didn't seem to listen and ordered me to sit. So I was being transported around, drinking viscous mango juice, and everyone else was just staring at me.
Anyways, we went outside and I sat on a stone block, waiting for a van. It took a pretty long time, and my mom forced me to eat some chocolates, which I reluctantly did, and when we finally got a van I jumped into it, and went to sleep for some time.
When I woke up, I saw some trees and a poorly constructed road outside. I felt like vomiting and vomit had already come up to my mouth, I was holding it for some time so I just took someone's attention and showed that I was going to vomit soon.
They stopped the van, I went over to the other side of the road, and vomited on the plants.
In both the cases I have felt better after vomiting. The user (I don't and I can't bother quoting him) who said that the pain felt was "the pain being removed by the body" was correct.
TL;DR Read the full thing, there's two passages mind you. Or else just ignore this post, it's just me whining about times when I vomited. Deal with it.