implantation bleeding? HELP ASAP

okay sooo these are the days i had unprotected sex .. i’ve been having light headaches on the left side of my head for daysss but i didn’t think anything of it 🤷🏽‍♀️ UNTIL TODAY , when i wiped myself and had PINK SPOTTING . i started piecing everything together likeee .. oh no girl 🤣 so i’m like you know my period is next week it’s probably starting early ( i don’t spot before my periods, ever ) so i just waited for the spotting to get heavier but it stopped .. had a little cramp afterward & that stopped . i’m like implantation bleeding ?? i’m not too sure i wish i would’ve taken a picture . it’s not blood-ish pink , it’s PINK.. light , but you could see that it was pink .. then it turned light brown ( kinda yellow like pee ) & stopped 🤷🏽‍♀️ could this be implantation bleeding ?