Spotting on letrozole- 10dpiui

Jul • 👶🏼 👶🏼💙💙

I am 10dpiui and have been experiencing cramping for the past day and now just started spotting. My period is not due until Monday or Tuesday. Has anyone had this happen after

<a href="https://glowing.com/glow-fertility-program">IUI</a>

or taking letrozole? I never spot and my period is never early 😐 thank you!