I have an 8 month old westie,he was great when we got him at 3months old but over the last 3 months he started peeing all over the house and now he has even started peeing in his bed at lest 4 times a day,his testicals haven't dropped yet could this bee the reason

Has he been to the vet for a once over? What's his exercise routine like? How often are you taking him side?