Spotting/implantation bleeding???

Hope

Hey ladies! Here’s the deal, two weeks ago, I was fertile.

I was having unprotected sex with my boyfriend.

I am supposed to get my period in the next 7 days.

Yesterday, after intercourse, I bled all day. Not heavy, just spotting plus it wasn’t really bright red it was more of a pink then brown color.

It stopped towards the end of the day, I had no cramps. My boyfriend said he didn’t intentionally cum inside me when I was fertile but he said that he wasn’t sure about precum.

Could it be implantation bleeding or just spotting before my period comes?