Faulty test?

So I am tracking my ovulation by test and today when I done a test it had a cross like a pregnancy test? I didn't think nothing of it but me and boyfriend are confused and would just like to know why this may off happened. No wee entered the test 

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