Confused 😩

Mel
I always have a 28 day cycle 
Due on today always come on like clock work either in the night or first thing in the morning 
No period today. 
So I put into glow that I've not come on and it has recalculated my calinder now saying that I'm due in 7 more days making it a 30 day cycle and saying I wasn't ovulating on the days it origanly stated. 
I have taken a test 2 days ago and was a negative 
I have be pregnant before so I no what the signs are I'm just confused on what has happened  

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors