I have recently been sorted as 30f ish, give or take, after wearing a 34c for ever. I got carried away in the bra shop afterwards and bought 4 new ones, luckily in the sale. Some of the sizes are different but 3 out of 4 of them seem to dig in under my arm pits where the wire ends. The bras aren't riding up at the back, and I bought balcony style as my boobs aren't very full on top, but I'm wondering what I've done wrong with the style or fit. Can anyone advise please? Tia