I'm on Microgestin (the 21 pill pack) and my periods have been coming a week earlier than they're supposed to. Ive been on this set of pills for about 4-5 months. I got off track for 2 months, sleeping in, taking my pill late, forgetting to take it for hours, etc. Now, my period comes on my 3rd week of pills, instead of the 4th week of no pills. Even as Im actively taking them. Is there a way to correct this? I have a vacation coming up on the scheduled period, and I'd really like to be blood free. Thanks.