A.S.
Hey F.,
I stopped breastfeeding at 6 months because I just couldn't keep up. I'd lost a lot of weight and I was working full time and when I pumped, I'd literally only get about an ounce. When we weaned, I didn't have let down a single time. However, I remember it was at least 2 or 3 months after I'd weaned that I still had milk in them. My thought is that its got to be very normal and definately don't worry about it. There is a completely good side to this--as long as there is milk in them, they'll still be a nice size and much prettier than what you're left off with when you're dry completely. Enjoy them while you have them! :) And definately don't worry. My theory on it is if there's no pain, there's no problem. :)
If you're still concerned though, call the hospital where you delivered, or a local hospital with a labor/delivery section and ask for their lactation consultant. These ladies know absolutely everything there is to know about your breasts and the many changes they are going through.
Good luck sweetie!