I've got a one year old, am still breastfeeding him, and my periods returned about five months ago. They've been very regular, every 28-30 days, until now. Suddenly my period is two weeks' late (which it never is). I've done two pregnancy tests (although it would be VERY weird if was pregnant as always used condoms); both have come back negative. Now I'm petrified something's wrong... Was hoping to start trying for another baby in a month or two.. What if I'm infertile or something suddenly? Where has my period gone?! I've not been breastfeeding more than before, I've not changed lifestyle.. I'm under a bit of stress but not substantially more than normal.. So scared.. Anyone been in this situation?