Should I take my puppy to the vet?

Puppies do have side effects to medication. Your pup might be going through a growth spurt, that could account for her wanting to sleep. As far as the not so solid poo, has she been wormed? Some dogs do require multiple worming. With the mucous coming from her eyes,make sure she does not have hair in them. The fact it is clear is a good sign. It is also possible she has developed an allergy. I recommend taking her to the Vet