I didn't, the same type thing happen, but I had already had an appointment for another cat,
but when I seen the blood and figured out which cat, because there where still signs of it on her behind,
I brought her in instead, and the Vet explained what was going on.
That's when I first ever owned a cat and I had noticed she had trouble pooping a couple of times before then,
Seemed she couldn't get the turd out completely, and I had to give an assist,
but I hadn't known at the time not to pull and everything seemed to be normal after the removal.
Seemed the Vet shaved around her butt area and gave her some antibiotic but I'm talking like 6 years ago so I don't remember clearly,
but it did clear up and there has been no problem since.