Bbt chart help

Erin
So here is my chart from this cycle. According to glow, Ovia and ff, my period was due on 9/10. It is now 9/14 and there is no sign of it. I took a test on 9/10 and it was negative. I can't tell from this chart if my period is actually late or if it is due later than what my apps show. Help please!!