3 days late on my period

Amber • Sat, Aug 01

I had seen a fertility specialist back in June did and insemination and tested negative had a normal period and now I'm supposed to call when I start to do next round and here I am 3 days late and I'm never late.... glow is pretty accurate i start on or around the day and I just don't know if I should just wait and see if I start or test i don't want to get my hopes up for nothing