Liz Buchanan BVSc MRCVS
Hello - they could be worm related. Have you tried typing 'cat, tapeworms' into the blog search bar on this site? You will find some very helpful articles. Essentially, it sounds as though you need to see your vet / nursing team and get good preventative measures in place against worms; they are very hard to avoid by other means and can prove a hazard to human health, especially children. Tapeworms can indeed become serious; your veterinary team are well placed to ask the right questions to decide how soon your cat needs to be seen.