I think I found a worm segment in my cat's bedding. She has been having diarrhea for a while now, and I thought it was her diet because my mother spoils her, but now I think she might have a type of worm. I attached a picture of the segment, what kind of worm is this? I can't bring the cat to a vet, it's a feral that adopted me and she is too wild to handle. I can only feed her and try to treat her by mixing the medication to the food.

That does not look like a typical worm. If you can't take her to a vet, the best thing would be to get a stool sample and just take the sample to your vet for an analysis to determine if she has any parasites. You could also buy a broad spectrum dewormer and treat her for parasites or use Revolution on her which would treat for fleas, heartworms, roundworms, and hookworms. If the diarrhea continues, then she really needs to be seen by a vet. Maybe you could find a mobile vet that could come to your home to examine and treat.

I would put on a pair of gloves, and use a paper towel to remove the worm. Wash your hands thoroughly after that. Use good hygiene around her, and have Pixar seen by a vet in the morning. The vet can treat her for worms. You may want to contain her to one room with a litter box, food, and water for the night. I hope this helps!