Implantation bleeding?? 🥲🥲🥲🥲

I just had my first baby on the 1st of June I then started the pill on the 9th of July once my postpartum bleeding stopped, on the 15th I had unprotected sex but he pulled out & now I’ve just wiped & this has appeared.. does this look like implantation bleeding ? I’m abit worried because I didn’t realise until after I had sex that the pill isn’t effective until taking it for a whole 7 days 😫😫😫😫