This won't really be a long experience, but just a few more things to add.
Yesterday, 3 times I saw something moving in my peripheral from the right side. The first 2 were quite quick and looked smaller than the usual height they have been, from any thing I've seen before.
The first one moved across the backdoor from left to right. The second Across my bay window in my kitchen nook. The windows have blinds and curtains that cover those.
I have 2 back doors, because of the add on room that I call the lounge room. The lounge room is off the kitchen, with 2 steps that lead down into it, and a foot across from those is the backdoor that leads to the backyard.
I had the backdoor open where I had a clear view of the backyard, When I saw this first fleeting small thing. I'll admit it could've been a small bird just outside the door, or even my puppy running across the yard. But for the time it took, and what appeared to me to be dull in color and closer than usual, it seems sort of improbable.
The second fleeting thing... The reason I say thing is because it was too fast to see if it was a shadow. I was in my hallway, cleaning the built-in vanity which was at this point covered with hairbrushes, lotions and various hair products.
I have a clear view of the bay window, only being about 10 feet away.
Yesterday was sort of cloudy, not too windy and a quiet day when I saw the fleeting thing. Its height was around 2 feet in height, moving again from left to right in my peripheral once again. I have become used to these, when they happen I shrug it off and keep my day going.
Now onto the third time this happened. Again I was standing in front of the vanity. My husband had made it home and was laying on the couch resting on his phone, 2 of my boys were sitting on the other couch watching TV and the other two kiddos were downstairs playing a game.
I saw my husband get up, walk across the living room and towards the kitchen, but what I noticed was the shorts he had on were of a different color and design. In reality, he had on black shorts with a red and white stripe down the side of the shorts. The spirit imitating him had on a tan sort of color shorts and the design on the side was a faded orange and lime green going down the side.
I saw him walk across the room, and it didn't hit me for a few seconds because the way it walked across the room was completely normal so I looked away, and BOOM! I instantly looked around the little wall that hides the vanity, and saw my husband still laying on the couch.
I know it wasn't him because I had given him the shorts to put on, and he doesn't own any shorts of that color with any sort of design on the side. And to confirm, I asked him "Hey, did you just go into the kitchen for something"? He said no, and continued on with whatever he was doing on his phone. My oldest looked at me he knew I saw something.
A week and ago he asked me if I had let our pup Tucker into the room with them early that morning. I told him no, that I had kept him in the lounge all night, so he wouldn't wake them up. He said "Mom, I could've sworn you put him in the room." I asked why and he said he thought it was strange when he woke up that morning and Tucker wasn't in the room with him.
Now Tucker is a big dog and when he gets on or off of anything he moves it. Same with his bed. Not only is that strange, but he said he saw me let him in and felt Tucker get on the bed and lay down. So when he woke up and turned over, fully expecting to wake Tucker up, was quite the shock when he wasn't there.
The story about your husband is really strange, only the colour of the shorts being different. This may sound odd, but perhaps the doppelganger of your husband may have changed the colour of the shorts in order for you to recognise it clear as day without any doubts in your mind?