Hi!
So pleased to see your update and that you are feeling more comfortable now.
You were right to trust your instincts - people with UC tolerate so much discomfort - but even though you really didn't want to go to ER somehow you knew the symptoms had crossed the line! It's good that your stomach infection is H Pylori because it is fairly easily treated - and once gone the pain should settle.
While they have you in hospital it is best that they are going to fully scope you to exclude crohn's - unpleasant but better to get all the tests done and know what you are up against. Also the TPN will give you back the balance of nutrition needed to start healing.
Please keep positive and keep us updated.
Sue