Period 5 days late

Alex • Mother of two 👨‍👩‍👧‍👦 3/17/16 1/2/17
My period is five days late and I don't feel like I'm going to have one at all anytime soon, I tested a couple of times but everything keeps coming back negative. I'm very confused and frustrated! I just want to know what is going on with my body or if I'm pregnant.