I have only had one period but... I have this app called Clue. And it told me that i was starting today and i didnt. (Normal) Well today i have felt... Not a cramp but like imagine someone poking you...yea thats what i felt. Also i have beem moody. Sence I have only had one i know it can be irregular and i dont know how long my length between periods are. But i just want to know could that be a sign that its on its way??