Early period or implantation post IUi

As

Ovulation was confirmed via ultrasound & bloodwork. I triggered last Wednesday and was supposed to ovulate 24-36 hours after. It’s only been 6 days post trigger shot and I am spotting. I did a double <a href="https://glowing.com/glow-fertility-program">IUI</a> last Thursday and Friday. 4 & 5 DpIUI.