Positive OPK??

Shauna • TTC after 2 miscarriages & with PCOS💗

I started OPK last week and I took one yesterday morning that had both dark lines and I also took a test this morning and it had 2 dark lines as well. Last weeks strips weren't as dark. How many days do they usually stay positive? I'm crossing my fingers this month!!

Last picture was taken this morning.