What's goin on????

I have a son he's 15 months old...when I became pregnant with him was the first and only time my period had ever been late..now I haven't had a period since December 2012 and my period hasn't been late since the last time I eas prego...I've taken many tests but they all have been negative. At first I couldn't eat anything without wanting to throw up but it's went away. I have cramping though like I'm going to start but that's been over a month. I'm so confused...yes I did go to the dr btw but that test was negative to but he didnt draw any blood.
Help???

[flower216]

Say wait maybe it can be a little longer. If not then sometimes period are slow. Have you been stressd or been eatin healthier than before or not eating healthy enough?

[hismommy15]

According to those period tracker apps I've missed two periods already..I haven't been stressed and I eat as I always have...