Help??

Aunt flow was due on the 5th according to glow. But last month I was a week early and dark the whole time. I was wearing a pad just in case and my husband saw the wrappers and asked if I was on my period, I told him yes so he wouldn't get his hopes up and now I'm 6 days late and still nothing. Going to buy test tonight. But should I wait longer then 5 days how many days past missed period should I wait??