Can anyone tell me what this is?

I’m supposed to be on my period by now but I’m only a day late? This just came out and can anyone explain this to me?

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