Unexpected Period After Birth Control Pill Missed - What To Do?

Question
I recently started taking B12 supplement.  Tuesday night I missed my ortho tri cyclen pill(which I never forget) and I doubled the dose on Wednesday night.  I started spotting on Thursday.  It continued to Friday and now I have completely started my period, which was not supposed to be here until Sunday, March 7th. My period has been completely on track to the exact day for 3 years. I am going on vacation from March 20th until March 27th.  How should I take my birth control pills to get my cycle back to normal?  I have continued taking the pack I am presently on.  Should I stop them now and begin taking a new pack?  
Will it make my period skip a week, or will it time it next month as it has this month?  Please help...

Answer
I really can't predict how your period is going to change and when it is going to go back to normal. I suggest that you keep taking your birth control as you normally would, since you don't want to open yourself to pregnancy. Look into a product called Instead - you use it in the place of tampons or pads and they can help make vacations easier. They are a bit messy, but worth it! Can you also hav sex while they are in.
Hope this helps.
Dianna