Hi Dr. Rhea I Had My Periods On 1st September

Hi Dr. Rhea i had my periods on 1st september till 5th september. As i am going to get married on 1st october i want to delay my period for 7-8 days. i have sevista 60mg tablet when should i start taking them and how many times a week should i take so that it act as contraception as well as delay my periods by 7-10 days