Spotting or implantation

Hello! I know it's normal that having some spotting after an IUI. But my spotting started 3rd day after my IUI. It's very light spotting. Today it's 5 dats after IUI/ovulation and I started spotting again.

Can it be implantation? 🙂🙏🤞

Did 5 IUI before and never had any spotting. All of them were failed. RE planned IVF and my first IVF cycle has just cancelled and turned an IUI since I only had 4 follicles, just 2 of them were mature.

I am so tired, overwhelmed. I really need to hear some good news.

Thank you 🙂