Wah, you think you body is a car or computer.
I wonder how stomach can digest more than what it can digest. If
like that, stomach wall would have been damaged. That's what cause
your gastric pain.
For borntolive:
I think it could be that your glucose level is on the low side.
Since after you eaten and symptoms disappear, most likely it is
that. By the way, do you have cold sweat? Cold sweat more or less
confirms it.
I suggest you go for a checkup. Play safe better. 