1) get a vet check
2) if the dog is healthy, go back to square one on housetraining.
Supervise and FOOD REWARD all outdoor elimination. If you have not been using a pee pee command, start now. Name the action when it's occuring, and food reward it each time it happens in the right place.
Allow the dog NO unsupervised time free in the house.
Close doors.
Use baby gates.
DO NOT let him out of your sight if he is loose in the house. NOT FOR ONE SECOND. This is how bad habits start with puppies, and it snowballs. I cannot emphasize enough how completely important SUPEVISION is when dogs are learning how to behave in your house.[/b]
Also, if he is not neutered, and you do not plan to show him for his CH title, I would get that done immediately.