Final answer:
NuvaRing provides pregnancy protection for about 4 weeks, with the user wearing the ring for 3 weeks and taking it out for one week to have a period. A new ring is then inserted.
Step-by-step explanation:
The contraceptive device known as NuvaRing provides pregnancy protection for a full cycle, which is typically around 4 weeks. Users insert the ring into the vagina, where it stays for 3 weeks. After these 3 weeks, the ring is removed for the week that coincides with the user's period. Following this break, a new ring is inserted to continue the protection. The vaginal ring works by releasing the hormones progestin and estrogen, which prevent the ovaries from releasing eggs and thicken the cervical mucus to block sperm from reaching the egg.