Hi everyone I wormed my 13 week old pup this morning as advise by my vet to wait 2 weeks after his flea treatment. He passed a large live worm (about 5 inches) in his poo and has since been sick. He seems lethargic.. still eating and drinking but his stomach is making really loud rumbling noises. Is this to be expected. Pleased the wormers at doing their job but don’t want him to be poorly.