I'm miserable here. My pants are SO freaking tight in my abdomen. They have a fairly long zipper and I wear them with longer shirts to work because they flatten my fat stomach. Since it's my second time around (sort of), I'm a bit more bloaty and, well, fatter, this time. I start the day empty but by the time 2 pm rolls around, my buttons feel like they're going to pop off. Guess it's time to retire these pants for awhile...
Twin boys born too early at 17w4d and 18w2d in February 2010
Transabdominal cerclage placed September 2010
DS born at 35w1d in February 2011
Twin girls born at exactly 36w in February 2013

Re: WHY did I wear these pants?
I am so nervous about this exact thing because this is my second. I loaned all of my maternity clothes to a co worker and I really don't want to ask for them until I announce at 13 weeks. Fingers crossed I might be using a bella band.
On the flip side it is exciting!
I've gotten to where I hate to really wear anything that goes around my waist. So that doesn't leave me much. Like you, 2pm hits and it's flowing over the top (so it feels) and it's all I can do not to crawl out of them.
I'd really like to just wear yoga pants and tanks/tees each day.
BFP#1 1.28.10; HB 6w5d 2.18.10; No HB 3.8.10; Natural m/c 3.9.10 at 9w3d
BFP#2 - 7.22.10 DD born 3.16.11
BFP#3 - 8.11.11 DS born 3.27.12