Recently dewormed cat w mucous, slightly bloody stool.

My cat was recently dewormed on march 10 and was out on antibacterial medication for 5 days. His poop has been normal until today when it started being mucous-y, greenish kind of colour w a little bit of blood. I've read somewhere that this just means that the worms are dying? If they are I'm just wondering why it took 5 days. I also started feeding him a little less today because he's been leaving leftovers recently. I used to feed him a whole can of Whiskas wet food everyday but yesterday I started feeding him 1 pouch of Whiskas jelly in the morning and 1 at night maybe that has something to do with it as well? He's always had a bit of a sensitive tummy I didn't want to take him to the vet again so soon before I was sure that there's something wrong. Thanks for answering xxx

I think this is something to speak with your vet about. I don't know about this being a reaction from the dewormer and wonder if there might be another parasite too.

However, he will likely need multiple doses of the dewormer, a few weeks apart, to fully get rid of the worms.

I agree, it could be a number of things and it's best to ask your vet. Because he was on antibiotics, you might also want to ask if a probiotic would be helpful.