Question about the pill

Hi
I'm currently taking the pill and you take one every day for three weeks, and then you get a week off each month when your period comes. I'm going on holiday next Monday which is when my period is due. I think I was told by the doctor that if I continue to take the pill into the fourth week, it'll stop my period for that month (obviously not making a habit of it but it's a special occasion and I don't fancy being 30,000ft in the air bleeding heavily from my insides lol). Would this work or do people still experience bleeding/spotting?