could this be spotting due to pregnancy?

Victoria • Baby #1 due September 21
Glow predicted my ovulation day to be cd 14 on 11/10. After bd that day I had light pink/brown discharge. Then today cd18 I have had creamy brown discharge all day. Could it be implantation bleeding?? Any opinions are appreciated! Tested tonight bc I don't have willpower and obviously it was negative! 

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