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You will not necessarily start your period on the same day each month. It is typical for there to be slight variation.
Since you are taking birth control pills, your periods should become more regular over time, as long as you are taking them correctly.
With Loestrin 24 fe, you should take a pill each day. So, when you finish the pack, you start the next pack on the day after your last brown or placebo pill. Do not wait any days between packs.
Your period may start on a different day each month, but again, over time it should become more and more regular over time since you are taking the birth control pills. In fact, your periods should become shorter an lighter over time while on this form of birth control.
Also, in case you were not aware, It is recommended that you take your birth control pills at the same time each day to make them most effective. Pick a time of day that is easy to remember. You might find it helpful to take it when you do something else you do every day, such as brushing your teeth or eating dinner
As you may know, the menstrual cycle is considered to start of the 1st day of bleeding until the 1st of the next time of bleeding. The average cycle is 28 days - it is normal to have a cycle that is shorter or longer (when not on birth control pills). You can mark the first day of bleeding each month on your calendar so as you can keep track of it.
Stress and exercise are two things that can cause some irregularity in the periods, and this normally does occur from time to time (an irregular period). If you have great swings and changes in your period the birth control pills will help them to become more and more regular.
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