Great news!!
I am so glad that you are feeling some relief.
More thoughts on the cold/elimination connection...
I often get chilled after eating. I know that the body draws much of it blood and energy to the gut to aid digestion. I wonder if it is a similar situation with elimination?
With those who have IBS, the signal to eliminate is often triggered too fast after eating. This starts the intenstines in the process of moving...which is one reason why it used to be termed 'spastic colon' Lol!
With all of this activity...it is entirely possible that you are getting diverted blood flow from your extremities and causing your chill. (and purple fingernails!)
Again...not a doctor...just have an inquisitive brain that likes to come up with hare-brained theories.;p
Anyway, again, congrats on your good results...doing the happy dance with you!
S.C.