Pill effectiveness

Hey so it’s my first time taking bc pills, I started the same Sunday I started my period so I know that it should already be effective. However I was wondering, if I’m about to reach the 24hrs frame to take the pill, do I have to wait for my body to absorb it or whatever for me to have sex??? Or can I have sex right after taking it without having to worry??? I mean to ask, if I take it around 8-9pm and will have sex around that time, should I have to wait or am I good? Sorry for the bother and thanks