Got it, but you have UC?
It can take a while for the gut to normalize in some people after an enteric infection.
"gurgling and stomach growling" is not to much of a problem, more annoying and an upset gut more annoying. So you know stress can increase this somwhat.
I see your taking probiotics. You want to help restore good bugs.
Pain or discomfort is a must for an ibs diagnoses.
However not for functional d which is like IBS, without pain or discomfort.
Depression can make things worse for sure, even mess with the bacteria in the gut. This can contribute to things getting better faster, so I would work on that if you can.
"Argh! GI issues are the worst." I agree they can be very bad.
Hopefully you recover soon from this and its not something else. They tested you pretty good it seems. Did they do blood work?