I have a quick with regards to using the Birth Pill Othro Tri Cyclen. I have been on this Birth Control pill since Dec of last year 2009, previously was on the Depo Shot for 5 years. Anyways, my question is it normal to be on your menstrual cycle while being on an active pill instead of being on your last week of sugar pills? This just actually recently started last month I was on the last week of taking my sugar pills and was suppose to start my menstrual cycle and it never came. I started a new pack of pills the following sunday and the next day "monday" came along and I started my period. I thought it was kind of strange but really didnt think to much about. Now for this month its doing the same thing again I am currently taking my sugar pills and have yet to start my period. This is normal or could something be possibly wrong?