Please please help me! 🙏🏼

I got the Mirena IUD out on 03-Jan. Had a red bleeding for 2 days. For 5 days now I’ve been spotting brown, old blood. Today, honestly, looks more like AF.

PROBLEM IS ...... I’ve been using clearblue advanced opk since the 10th. I’ve had 9 flashing smiley faces so far. So it detects estrogen. Can you someone please please please tell me what the heck is going on?

Should I keep testing? Will I ovulate next week or...?

Can you have an Estrogen surge before / during AF? I’ve been scanning the internet for answers; I need help. Thank you in advance.!