It's quite normal to go 19mo without a cycle. Some women don't get their af until they wean completely, it's really subjective to each person. The only options are to wait and see or try to night wean (which has decent success). My cycle seems to come back at 12mo pp no matter how much or little I nurse, each women seems to have their own clock..
Abra, Married to George, Mother to DS 12/03 & DD1 08/09 & DD2 12/11 + Someone New in May 2015! After years of planning, we are finally living our dream in South America!!