implantation bleeding ? help asap

okay i made a post 2 days ago because i saw a streak of pink ‘discharge’ after using the bathroom . it wasn’t much & it wasn’t dark but just enough so that you could see it was pink . soo my period is supposed to come for the 24th & i’ve never spotted before any of my periods like this .. i was having bad headaches in one side of my head for days before the spotting came that’s why i became curious . anyways, my question is , could this be implantation bleeding? (the hearts on the calendar were all unprotected sex)

this is from when i sported the first day.

i’m not cramping or anything btw , but i had a slight cramp when i saw the streak of pink on the 18th . not painful like pms though .