Period Math!?


I don't know if anyone on here can help with this, and I am embaressed by y mathematical ineptitude but I just can't figure this out.

I am currently on bc and I want to use it to change my cycle. I am getting married in June and would prefer not to have my period for the wedding and honeymoon. I'm trying to figure out how to use my inactive pills so that I can not have my period then.

Here is the number data for any math goddess willing to help me.

I take 21 days of active pills (usually Sunday starts). I start bleeding after about 3 inactive pills (wed) and bleed for about 3 days. My next inactive week is Sunday 1/29, meaning my next period will be 2/1-2/3. I want to take at least 3 inactive pills each month so I do get withdrawl bleeding, but I'm not sure how many to take to make the dates line up. My wedding is 6/16 and the honeymoon would be the following week. Can anyone figure this out!? Or at least gimme an equation or something D: ?