Need advice do i test

Jade
I have two tracking apps and a sometimes regular but one or two days late period my ovia app says period was due on the 30/12/15 and my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> said 7/1/16  for my period was going to come on nyd as I thought I was out last month and was having cramps and have been off and on I've been getting once in a blue moon light nausea but nothing but constant tiredness I took a test on 6/1/16 and it was negative for the last week been feeling like my period will arrive the next morning but it never does went from 28 day cycle to cd 44 now. NEED YOUR ADVICE LADIES