I have a cocker spaniel which I adopeted about two year ago he is about 3 4 year old.
These couple of day he has been urinating in the house. He is traning because he just started doing this should I worry about it.

It's always best to have any sudden changes in behavior onced over by a vet to rule out any medical issues. It's easier to work on behavior issues knowing your dog isn't in any pain or suffering from kidney or bladder stones.

Was there any changes in your home? New arrivals or kids or people moving out? Have you gone on vacation and had someone look after him? Have you gone on any long trips where he was in the car or away from home for a long period?