Anyone else in this boat?

I'm only 3 weeks and 3 days, but my clothes are already getting to snug for my liking. This is my second baby, and I feel like I'm already getting a belly?! I'm sure some of it is bloating, but the only time I feel sick really, is when my clothes are to tight on my stomach. And everything is irritating me so much, this just adds to it.  Anyone else experiencing this so early?