My son is two and a half and still nurses a lot, I finally got my cycles back in August and they were like clockwork (as usual) every 28 days for two months, and as of today I'm five days late but got a negative result on a urine pregnancy test (whew! three is enough!) Is it possible that once it's come back for it to stop again due to breastfeeding? I don't think stress is the cause as my life is pretty intense all the time anyways. Hence the "whew!"