T.M.
I am going through the same thing right now and my midwife (through the ob/gyn office) told me that the low-dose pill I am on now, Camilla, was not as effective when only nursing 2-3 times a day. Her recommendation was that when I am down to nursing 3 times or less that I switch to the regular pill. She did say that it would reduce my supply some, but that would also help with the soreness. In my book that will be a huge blessing because I was very engorged when my milk first came in. I realize that supply might be an issue for others though. Hope that helps!