I don't think that docs can do much for infertility while nursing, since nursing hormones (high prolactin particularly) automatically compromises fertility, at least some. I remember one mom in a TTC while nursing bg took Clomid while nursing b/c she didn't realize and the doc never asked and she got pg that cycle, which was interesting to note.

My toddler is laying across me, nursing, asleep for his nap. I love that my schedule let's me be able to do this with him. With a second child things would probably be quite different.