Belly band?

BoilerUpGCCC

I'm almost 11 weeks and although I have bloat it has seemed to get a little better. However, being small and having small close fitting clothes, I already find myself unbuttoning the top button of my pants. I'm sure some is from bloat but I know the uterus has doubled in size by now too so could be some of that thicker feeling. I've only gained a pound or so. When did everyone else start having issues fitting into their pants? It just seems so early. I haven't broken out the belly band yet and am just using a hair band to loop around the top button to give me some room. This is my first pregnancy.