My dog

My dog is 10 years old. I’ve had him for majority of his life. He loves sleeping under the bed for whatever reason. But today he will not leave my side. He just keeps finding ways to be near me. He even sat directly on my shoulder and put his face in my hair. He keeps sniffing me non stop. I haven’t been anywhere new so idk. He also kept disturbing my husband and I during intercourse by jumping on the bed and trying to be right in my face. He’s usually scared and hides in a corner for whatever reason 🤣 We recently took him to the vet and he’s healthy. So what could it be?