Nexplanon

I’m currently on Lo Loestrin b.c. and thinking about changing to the Nexplanon implant because my periods are very irregular. I finish my current pill pack 3 weeks from Tuesday but I also leave for vacation that day so I won’t be able to get the implant when I finish the pack. I made an appointment for the following Tuesday to put it in but I’ll already be a week into the new pill pack... Should I still get it inserted then or should I wait until I finish that pill pack as well to get the implant inserted?