Small amount of blood in one cats stool

Hello.
The other day on the rim of the cat box I noticed a little red dot. I didn't think anything of it. I moved the cat box to the other room while I was cleaning the room it was in and changing the box and my one cat rushed to the box to poop. And at the trail end of it there Das a small amount of blood in it. I immediately premixed but bagged up the bloody part Incase i needed it.

She is still bouncing of the walls and eating and drinking normally. They have been eating a healthier dry food and Saturday I purchased some different did, the cheaper junk food style food as a little treat. And they have been having that since Saturday.

Other wise any change is my girlfriend hasn't been home since Friday, she went out of town. So they have noticed she hasn't been home. So I'm not sure what I should do. Should I see if it was a one time thing. And watch next time she poops? I raff that did changes and things can cause upset stomach and like colitis like symptoms. Is that true

It seems that every time I see blood in the liter box my cats have some kind of parasite.  I will usually drop a fresh sample off to my vet and they check it and give me medicine.  Keep checking every time she goes.  I keep a flashlight by the liter box and run in there every time mine go. I am obsessed!  I  wish you and your kitty the best of luck

Okay I'll do that and keep a eye on her godly is a one time thing

If it's not parasites, I'd definitely recommend taking the cat to the vet for a checkup: bloody stool was the first symptom when our previous cat had what was most likely IBD, which was most likely caused by food sensitivities. (We didn't know much about cat foods then and fed her cheap dry food...) Most important, keep asking and pushing if the vets try to tell you it's nothing to worry about: multiple vets at that clinic said it was "just" colitis, a minor problem!

Good luck, I hope the problem is easy to resolve!