I have had three instances of extreme stress that caused my band to tighten to the point of not being able to consume even Water a few weeks after the stressful incidents. It wouls start off feeling really tight and then progress to tighter and tighter and tighter which led me to need an unfill.
My doctor says it's impossible, but I know my body.
Time of stress #1- Dad had major stroke leaving him paralyed and in nursing home. Could barely eat anything for weeks and then it became so bad I couldn't even drink water and couldn't even lay down without gagging on phlegm.
Time #2- Went back to work after dad's stroke, kids started school, and several other small stresses.
#3- Dad died after a year in the nursing home and a few weeks later my 6 year old was very badly injured in an accident where a concrete fountain fell on him. He ended up with only minor injuries, but was transported to the hospital via ambulance with eyes rolling into the back of his head and blood eveerywhere.
I have had other times of stress that caused discomfort and I just went on liquids for a while and it went away.