Oh. There it is.

The calm before the storm?
Just about over.
The storm is starting.

All of a sudden, literally 30 seconds ago, my insides started to feel as though they were being drowned in acid.
Okay that is likely an exaggeration, and (for the record) I never want to try any sort of experimentation.
It does feel like my insides are burning.

Here's the good thing:
It is not severe right now, and I know that this level of pain is most likely temporary. It happens every few days - at least once a week - so I know that I can handle it. I have toughed it out before so I know I am capable of it. Now it feels like I am bracing for something I won't be able to stop.
Fingers crossed that it will be a milder crash.