How To Delay Periods?

Hi. I am getting married on 24 july and was wondering how easy it is to ger a pill to stop my period at least for that day. I am due to start on 22 but it sometimes is couple days late. I have read about the pill Utovian and think it is to late for me to go on the normal pill. Could you pleasr advice me. I have never done this before and am a health 33 year old. thanks