Belly Support?

I lost weight my first trimester but now that I'm in my second trimester(23 weeks) I'm gaining weight quite quickly and it's causing me extreme back pain. Does anyone use a belly support band thing? If so, which brand and where did you buy it? Any pics of you wearing it? I'm thinking about getting one to help me. My feet also hurt so bad and swell alot if I'm on them for 45 mins or more. Ugh!