Your description of an absence of a period after the removal of your Nuva Ring is called suppression of menstruation. The combination of the two hormones in the Nuva Ring (estrogen and progestin) sometimes thins out the lining in the uterus (also known as endometrial atrophy) and there is no withdrawal bleeding or menstrual period. Research shows that 0.3 to 3.8 percent of women have this experience when using the Nuva Ring.
If you desire a menstrual period you might want to speak with your healthcare provider about changing your contraceptive method.
Thanks for asking your question.