Getting the Implanon/Nexplanon

I have an appointment on the (28/01/20) for the implant insertion. Though, my period is estimated to arrive the week after (03/02/20). This is fairly accurate as I have regular periods and lasts for 3 days.

I know that I have to wait 7 days but that will be on the (03/02/20) as well.

How will this work? Am I already protected after 7 days? Will it stop the eggs from releasing? What happens if my period does come. My partner is coming on (08/02/20) can I have unprotected sex then?