D.M.
I have a 10 year old son and a 4 year old son. I nursed both boys until just after the age of two (following the surgeon general's instructions back in the late 1990s). In both cases my periods were regular as clockwork before pregnancy, but during nursing they were all over the place. In fact, I had only four to six periods during the entire two years of nursing. I had asked my doctor about it and she said this was perfectly normal because since I was breast feeding. Granted, keep in mind that just because you don't have a period, you can still get pregnant again so use protection! :o) I was on the mini-pill. It doesn't give you the same amount of birth control, but it does work.