First response opk

Samantha • 08/17/15 VJP; 06/04/19 RMR💓

I tried the first response opk I took one on a Wednesday it was positive it has two dark lines the test darker and then I took another just to do it on that Saturday it was positive I was like what? Is that possible I'm confused on how these things work! We did have sex of course during that time but I am just confused on if they were invalid or what? Help a newbie out!