Breastfeeding and no period!

Krystina
This November will be 2 years since I've had a period the first day of my last period was 11/6/13 had my daughter 7/28/14, I've EBF my daughter who is coming on 14 months and just nurses to sleep these days not through the day. It's driving me nuts that my period hasn't come back. My husband and I are trying to plan our last child and obviously this is holding it up lol. Any insight?