What part of my digestive tract needs training in tolerance?

So about 8 hours ago I ate a bagel with cream cheese and a bunch of seven pot Primo powder. You can see the picture of it if you click my name. Anyways it was hot in my mouth but not too bad it wasn't too bad in my stomach. But I was laying down in bed and my stomach was hurting something fierce almost threw up. Seem to be over that. Trying to sleep sitting up. Wondering which part of my digestive tract needs more tolerance? Do you think my intestine? Small intestine large intestine?