Unfortunately yes, your dog will miss you. They are capable of forming very strong bonds with humans; it is in their DNA. Dogs are aware when their loved ones are not present. My ex-gf, for example, was extremely close to her dogs. Her dogs would starve themselves until she came home, and it was really bad. She would sometimes leave on vacation for a week, and I would stay with her dogs, and they would refuse to eat anything. They would just wait near the front door most of the day. But her dogs had separation anxiety. Obviously idk exactly your bond with your dog, so idk how bad it will affect them. Either way, they know when you are gone.