TTC while breastfeeding

Liz
I know it sounds crazy to some people, but our little boy is about to turn one and my husband and I are wanting to get pregnant again so that when we go back to school (fall of 2016) both of our babies are old enough for daycare. With 4 years of grad school ahead, we would rather have kids closer together rather than 5/6 years apart. I had my first period since baby the beginning of June and haven't had one since. I'm hoping I'm pregnant, but all of my tests have been negative and I'm almost 2 weeks late. Did this happen to anyone else???