How regular will my period be?

😋😇💙
So basically, I'm on the birth control patch. Last month was my first month on it, and on my patch free week, I got my period on the 5th day (which was Saturday). I'm going to a summer camp for a week, and I leave tomorrow. On Tuesday, I'll be taking my patch off and it will be my patch free week. My question is, will I get my period on the 5th day again? I leave camp next Saturday, so it'd be really convienent to 1. Not have to wear my patch for 4 days of camp and 2. Not have my period till the last day. Is this realistic? Or does your period come whenever it wants on your patch free week? Someone please help