I have just aquired a new pom female puppy. I have had her for over a week now, and the vet told me to give her a worming tablet when she was 8 weeks old, which was Monday night. I gave her half a tablet (as she is so tiny) Monday night, and this morning (Wednesday morning) i found she had runny poo. Do you think the runny poo is from the worming tablet or something else? She had nice poo all day Tuesday. Does it usually upset the tummy? She has had nice long stiff poo everyday since i got her.