OPK when to test?

Michelle
Hey all we are doing our first <a href="https://glowing.com/glow-fertility-program">IUI</a> hopefully this month I am taking Clomid 50mg CD3-7, I know for the <a href="https://glowing.com/glow-fertility-program">IUI</a> the timing is key when did everyone start testing with their ovulation test kits after their last pill of clomid? And how often should I test, also once I get the smiley face that's is the perfect time or wait a day......