So I wear a 34D bra size (England) and I always used to wear it on the tightest one. Well I started noticing my back hurt where my bra sat so I stopped doing up as tight. I adjusted the straps and now I wear my bra on the middle clasp. Still a back ache! I'm not a 36D as its to big on my back so what do I do? Thank you for any answers I would really love for my back to stop aching 😐