Thanks for this interesting question. There are many factors that can affect the timing of a menstrual cycle. Given that you are recently changing birth control
, speaking with your doctor
about these concerns is very prudent, even if this is just done via telephone. He or she will be able to ask and answer your questions to make sure that you are healthy and that this is not something more serious. For example, on obvious cause of amenorrhea (or lack of a period) is pregnancy. Your doctor may feel the need to check and see if you may be pregnant, or he or she may ask more questions about how regular your period has been historically. This information may help to guide him or her to answer your question more correctly. In general, changes in birth control methods can interact with the regularity of your period to some degree, but how much that is for you will need to be discussed with your doctor. Please speak with him or her about this question. Please speak to the doctor that is prescribing your birth control, as he or she is in the best position to answer this question.