I had rusty brown spotting 6 days before AF was due... This happened for 2 days. I thought it was implantation.

AF appeared 4 days early after this random rusty brown spotting. It was medium/heavy. Never had a flow like this and if only lasted 2 days (very unlike me, usually a 6/7 day bleed)

Since my “AF” stopped I’ve had brown rusty spotting for 4 days.... I am getting a bit worried...

Am I ovulating extremely early? Is it possible pregnancy? Is it a weird AF? Do I need to go doctors .... SOMEONE HELP