I think I’m going crazy lol

I was sitting at the kitchen table and I heard the door from the garage open so I look over and after it closed, I saw a tiny shadow on the wall so I though my daughter came in to go potty. I get up and look and the bathroom is empty. My boyfriend just happened to open the door at the time and said nobody opened the door before him.

I told him what I saw and my boyfriend of course said it was the ghost (he claims the house, that his family built back in 93 is haunted.) I’ve lived here for three years and spent many nights here before then and never had anything happen.

The more I think about it the more I think I am going crazy lol. I keep trying to find a logical explanation, like maybe wind blew the door open a little but that wouldn’t explain the shadow I saw. This is going to drive me bananas lol