TMI, pink discharge

So yesterday I was 7 or 8 DPO. Hubby and I had sex at night.

I always go to pee and I try to expulse everything out after sex..

BUT. This time it was pink-ish. What this could means ?

Since I am here I see too many posts about implantation bleeding and I know it’s not a a common thing could it be that?

I never bleed after sex unless it’s right after my period!