Early period after IUI

T
So I just started my period after my first cycle of <a href="https://glowing.com/glow-fertility-program">IUI</a>... I'm a little confused why it came so early, I'm only 12dpiui. The nurse said to take a HPT on Friday, it's only Tuesday! I'm a little caught off guard and not really ready to begin another cycle again mentally... But I guess I better prepare 😢