T.T.
I would quit using the bottles that have the BPA. It is better to be safe than sorry. I used the Dr. Brown's bottles thinking they were better. We even heated up her formula in the microwave in her bottle (the worst thing to do). I am very upset with the whole thing...we purchased the more expensive bottles thinking they were better and then we find this out.
We do have a little girl and she is in therapy for delayed speech, motor ticks, physical therapy and occupational therapy for sensory issues. We are not sure what is wrong with her...I often wonder if the bottles were the reason.
http://en.wikipedia.org/wiki/Bisphenol_A