waiting for first iui. pos opk?

Got this, this morning but got an error on clearblue digital. I used the same urine to test on cb again after error cleared but didn't get the smiley just the circle that indicates negative. I have to call in my pos by 2 or I will have to wait for <a href="https://glowing.com/glow-fertility-program">iui</a> on Monday! Im scared that may be to late. I still have a few hours to test again and call it in. If the digital still says no what should I do?