Not a lot of people know about that but i think you might have to go to a hospital to check if you are good
Nothing I don't think.
plot and setting
Nothing happens
You Die
you die
you die...
pain
You can get chemical burns along your throat and stomach if you swallow lye.
You burp bubbles
It depends on how much you swallow. If it is a large amount, you could get diarrhea and/or vomit.
Mold grows in your tummy
This too will pass.