"i have just finished my first month on nuva ring. i am unable to take regular birth control because of high blood pressure, and so far no problems from nuva ring. also, i have migraines regularly and didn&#039;t want to try a iud or anything inserted in my arm.  the only problem i have had is when the nuva ring is out after the 3 weeks, i get very heavy menstrual flow and bad cramps. this is unusual for me, since i usually have a 2 day period with light flow. don&#039;t know if it has anything to do with the nuva ring or with having a baby 8 months ago. "