NuvaRing, a unique form of birth control, offers many benefits. Users insert a small flexible ring into the vagina each month to protect against conception. Over the course of the month, it releases a low dose of hormones into your body. Since the NuvaRing works in a similar way as birth control pills, you can expect similar types of common side effects. Patients have reported nausea, headache and weight gain when taking NuvaRing. Additional common side effects involved discomfort after inserting NuvaRing into the vagina. Some patients also suffered vaginal infections and secretions over the course of the month. NuvaRing uses a combination of hormones to protect against pregnancy. Due to these hormones, a woman may also suffer from vomiting, appetite changes, menstrual cycle disruption, cramping, breast tenderness, fluid retention, depression and rash.