Repost opk question

Reposting from earlier today for some more thoughts. Thanks!

Can your urine be too concentrated? I just got 2 back to back positives but I’m only CD 9. I know that’s not too early to ovulate, just early for me. I also know I might surge but not really ovulate as well- I just feel like these are really positive. BUT my urine was super dark both times. Just wondering if that could actually cause a false positive or if maybe I’m just going to have a shorter cycle this month. Thanks ladies!