If you haven't grown in size yet (I haven't either and I'm 16 weeks tomorrow) it might just be worth getting a couple of cheap wireless bras to tide you over. I haven't worn wired bras in years as I'm paranoid about breast cancer and there's a theory about wire causing it. Hestia has some nice ones - I think they are classed as sports bras and I usually get them from Best and Less for about $10 - they come in several colours up to size 16D. This should keep you going until you see any change and then you can invest in maternity ones, but still be able to use the wireless ones after you go back to normal size. Most chain stores have cheap sports bras that don't have wire and any of these would be fine right through your pregnancy.