What does this mean?
In the morning I did my first opk for this cycle and I use the clearblue digital test. So after waiting 3 minutes it came back as a plain circle, but when I ejected the stick, I noticed it had a second faded line next to the test line. Can anyone explain what this means?, I would really appreciate it. 

This is the test stick.
Add Comment
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