Will you still get a OPK+ if you've already ovulated?

Er
So I'm still new to the opk game and I think I got a + last night and I took another one this evening and it was the same darkness. I have a bit of cramping and I'm wondering if the opk will still be positive if I've already ovulated? Does anyone know? 
Here is my opk from this evening:

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