Implantation bleeding or AF

Callie

I'm 15dpo today. Yesterday around 5pm I started bleeding which was light red so I thought AF started so I put a tampon in. At 730 I went to change it and when I pulled it out it wasnt full and the blood tapered off to pink and Brown. So not normal so I didnt put a tampon back in. At 1030pm I went to the bathroom and wiped it was nothing but a little pink n cm. Okay so today I wake up at 930am and I'm bleeding but not alot again. I'm just confused at what this could be. Any advice

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