I'm in between a 34A and 34AA, what do I get?

I don't know which bra size to get. I got measured at VS and they said I would be a 30-32AA there but they don't carry that. When I try on bras in other sizes I'm a 34. When I tried on a A cup it was too big but my AA bras are too small. The only bra that seemed to fit me was a Self Expressions Bra size 34. It just says 34, do you know what size that is?