Kudos to you for nursing! It is a challenge that is well worth it! Check consignment stores, Mom 2 Me (B-ville J and Central), 9 Months later ( Lowell on Biz 71 near County Line Rd) and Little Darlings (B-ville but Helping Hands) might have some. Also, a friend who is nursing was just raving about some tops at Kohl's that aren't for nursing, but work great. They are stretchy material with a criss-cross front over the bodice and she just pops out and nurses. I think they are Sonoma, but they have many brands like that. Also, I wore peasant tops that I could just pull down one side. Good Luck to you and your baby!
D.