<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a question about the birth control pill Tri-cyclen lo 28. I am not sure when to take my 1st pill. I have been off the pill for about two months now, but want to start taking it again. I began my period today. Do I take 2 pills today as the pack starts on Sunday, wait until next Sunday, or begin today as a Day 1 start and re-label the package? Thank you!  <response>: Dear Claudia, I have gone through your mail u have said that you began your periods today. So, you can mark today as Day 1 start taking your pills. Take 1 pill a day make sure you are taking them approximately same time every day. You may have to re-label the package...but as the pills are color coded, I hope you wont have much problem in keeping track of the schedule. Tri-cyclen lo 28 is a very effective birth control pill, given that you are taking it regularly. Thank you 