i felt the same way when I got charlie. I have never had a dog before. Charlie is my first dog. The first night was fine b/c he slept with my brother in law so he didn't bark. The second night, i didn't get any sleep. He was barking and barking and barking non stop. I begged my husband to return him to the owner. My husband refused. The first week with potty training and take care of him and being a single mom to him in addition to having to pick up after big messy adults. It was a rough week for me. Every night, I just wanted to return him. I get very emotional and frustrated. I always joked with him that he is a little devil given to me by his devil daddy to ruin my life.
Anyways, now he is my baby my love. I love him so much. I can't imagine life without him. I don't even remember life before him. I only had him since christmas. lolz. I am a crazy person. I am crazy about charlie.
Be patient. It will pay off.