how to calculate cycle if spotting occurred before period?

Carol
I am trying to conceive and my normal flow period started today, but I had light/medium spotting once in Sunday and once on Monday. Do I start counting the first day of my cycle on the first day of spotting or the first day of my normal flow? 
 Thank you!!!

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