YES. omg yes it sure does. I feel like my muscles are so tight and my stomach is constantly aching. I feel like I did something -wrong-
Like that feeling in the pit of your tummy when you're a child and you do something bad.

Does that make sense?
Ack, I'm going crazy
It makes total sense to me.

What you describe is exactly how I feel right now.
For me, this visa journey started OK. From working days 1 to 25, I didn't really think too much about it. Then from days 25 to 45, I woke up every morning feeling sick to the pit of my stomach, and that feeling would last from the moment I woke up, to the moment I went to bed. Eating, the odd glass of red wine, being with friends and family and trying to bury my head in work helped a lot, but I still had a real feeling of disassociation with the world around me. Then from days 45 to 60, it got a bit easier, and I was feeling a lot calmer about everything.
Today (day 61), however, I think is the worst of all. It's the day when I'm expecting the passport to arrive.
So, I'm currently sitting alone in the flat (I'm in China at the moment and my partner is a Chinese citizen).
I think I must have notched up several miles pacing around the flat, just waiting for the knock at the door. It's a little after 1pm here as I type this, and the passport tracker is suggesting a late afternoon / early evening arrival.
So, a few hours to go, and I just feel awful....absolutely awful. The half-opened bottle of wine in the fridge has helped steady the nerves a bit, but, crikey, the minutes are just crawling by. I keep turning over in my mind our application, what we submitted,, and whether anything could have gone wrong - did we miss something? Did the solititor make an error (I know he made two small errors, but I don't think they are grounds for refusal)? Could Sheffield refuse due to a mistake on their part? Could something else entirely come out of leftfield?
I really don't know - in my mind, I know we clearly meet the criteria for the visa, but it's not just about that. It's about demonstrating that you do in the way that they require. As such, I'm putting our chances at 50/50 right now.
I guess all those questions that have been dancing in my mind for the past 12 weeks are soon to be answered!