False positive OPK with concentrated urine??

Ari • Registered Nurse 👩‍⚕️ Baby#1 on the way! Due November 2019

Has anybody gotten false positive clear blue digital opk and strip with first morning urine? I’m on CD12 of a medicated (clomid) cycle. I got a peak result this morning using first morning urine after getting low results the last 2 days but I wasn’t using first morning urine. The urine I used this morning to test was after not emptying my bladder for 10 hours. Does this effect it?i guess I just really don’t feel like I am ovulating. I typically get sore nipples at the time of my ovulation. I’m worried because we are supposed to do an <a href="https://glowing.com/glow-fertility-program">IUI</a> when I get a peak result and we aren’t being monitored..

I normally don’t ovulate until cycle day 30ish which is why my doctor put me on clomid in the first place..

I also am recovering from the flu so my urine is probably pretty dehydrated.