Is your stoma just "flexing" itself? Is it always longer or does it move in and out? You will see this movement as it contracts to move stuff through. Not unusual. And it could be measuring larger around during that time as well. So, before you get upset, be sure it looks the same all the time, and that you aren't just catching it while it is "flexing" it's muscles!
I am proud of you taking on the challenge of changing your appliance by yourself. Good For You!!! It is always good to have a backup (I should be talking -- my DH has never changed or assisted in changing mine). So, who does the better job - you or your husband? (hehehe)
A call to your ET nurse would not be out of the question to ease your mind, esp with a holiday weekend approaching quickly. Do keep us posted tho.
Diagnosed with CD in 1979, many resections and meds
Perm Ileostomy July 1984 at Cleveland Clinic
Disease free since surgery