I would like to formally apologize before asking this question because it might seem juvenile but after having heard and read a few things i am under a lot of confusion regarding this particular topic, My college organized a private health awareness program for women in which the health care professional said that it is in some cases,possible for women to have regular cycles while being pregnant which often leads to finding out pregnancies very late and other problems.Is it really possible?(Although it seems contrary to what we have been taught)