I started using Aviane 21 as a menstral blocker. I'm leaving on a trip and do not want my menstral cycle to interfere. I took one month's dose, but as I continued with the second dose, my menstral cycle started to the day. (I'm a regular 28 day cycle). To date, it hasn't stopped. Not as heavy as my regualar cycle, but still have to wear panty liners.
Is a stronger dose required?