Hi MV and welcome back!
I am glad to hear that you had some great therapy experiences and have made some progress...good news!
To answer your question, yes, rumination is pretty common and goes along with anxiety/social issues. I find myself doing the same...
...and I think everyone does to some extent at times.
It comes down to how much it is controlling or affecting you.
If you find that the thoughts are intrusive and relentless, then seeking to work through them with the help of Therapy Worksheets could be worthwhile.
I usually think about
certain interactions briefly and then just let it pass...but if I find the thoughts are persistent, then I'll use a worksheet.
I hope you'll keep us updated and keep sharing here when you can! Peace and progress.
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT