bad buy pants

pants received, but I feel too tight, I always use the same size, 31 x 32, but at this size is very small, do not serve me.The problem is that I received in the U.S., now I'm in mexico, living here in Mexico and if I can not make the change to 32 x 32I get the impression that I had not have bought in this way.in this case, I recommend doing?http://www.amazon.com/Levis-Mens-Relaxed-Stonewash-31x32/dp/B0018OFO3U/ref=sr_1_25?s=apparel&ie;=UTF8&qid;=1327344668&sr;=1-25antonio