I wouldn't worry about a thing. You're protected, and when the placebo days come, you can either wait one extra day and start up again on your normal day, or just shift the whole schedule forward and start a day sooner

one extra day off the pills shouldn't be dangrous.
Also! I have an xtra pack that lays around, and when I drop or lose a pill, I go to this extra pack and pop out the specific missing pill! That way, I don't miss one!