my marriage date 27th may 2011. my last period is april 24 that is firstday. so at the time of my marriage my periods cycle is 30th day. i have regular periods that is 28 to 30 for every month. could u pls suggest me is it possible prepone the periods or postpone. which one is better. because i have lot of ceremonies at the marriage day and later.if perpone possible which tablet could i take and which date and samething for the postpone also. thk u