5 days late

Allora
Glow originally had my cycle starting on the 8th and never came, then it changed to the 11th and never came, and now it says the 14th. I have 3 other apps that track my cycle as well and each on of them says I was supposed to start the 8th as well and have me being 5 days late. My husband and I have been ttc for about 6 months now my cycles are usually very regular. I took a test 2 days ago and it was negative. Could this be our month? Should I wait and test again in a few days or just wait until the month is over to see if af ever comes