Should i take my 7 wks puppy to the vet?

Yes, you should take your puppy to the Vet along with a fresh stool sample. When you get there, they will tell you all that's needed. CALL the Vet to see how much they charge. All Vets have different fees. Do NOT buy any OTC wormers, as they do NOT work. Not only that, you would have to know which worms are present as there are different wormers for different worms. The stool should also be checked for Coccidia, an intestinal parasite that is NOT a worm, and if present, Albon will be needed to treat it. All of this should have been done by the breeder or shelter you got the pup from to begin with, and the pup should have remained with it's Dam and litter until at least 8 weeks old.