FOOD POISONING >"< (AGAIN)

Well I think I've never really had food poisoning before in my life until I came to Japan.

The first time (I think) is from a KARAOKE place.
So one night, we went to karaoke. I had some UDON there and sang till 5 or 6 in the morning
Later that day, I went to work as usual but bought coffee cuz I need to keep myself awake.
But man, I was feeling so awful by the end of the day. Throwing up, sweating, etc.
When I got home, I just laid in bed. The next morning I finally got better.

So yesterday, I made a sandwich when I got home. I think that's the cause of my 2nd food poisoning
After i was in bed for about 2 hrs? I woke up. Then I felt something is wrong.
I went to the bathroom and started throwing up. So I thought i was better at that point.
I drank some water and got right back in bed to rest.
But to my dismay, I threw up all the water that I've drank and kept on throwing up.
Sigh i think im better now. =,=