We are happy you are enjoying your new bra from b.tempt'd by Wacoal. You may have bought the bra in too small of a band size which causes the straps to irritate your skin. Try going up a band size, to 34, and see if the straps are not as confining.
We are happy that you are enjoying you new Wacoal bra. You may want to go up one band size to a 34 and it would give you a little more room in the cup.