#prevent ovulation

    NuvaRing contains ethinyl estradiol and etonogestrel. Both estradiol and etonogestrel are female hormones that prevent ovulation (the release of an egg from an ovary). It is also causes changes in your cervical mucus and uterine lining, making it harder for sperm to reach the uterus and harder for a fertilized egg to attach to the uterus. The NuvaRing vaginal ring is used as contraception to prevent pregnancy. Uses :     This medicine is a combination of 2 hormones (an estrogen and a progestin) and is used to prevent pregnancy. It works mainly by preventing the release of an egg (ovulation) during your menstrual cycle. It also can work by making vaginal fluid thicker to help prevent sperm from reaching an egg (fertilization) and by changing the lining of the uterus to prevent attachment of a fertilized egg. If a fertilized egg does not attach to the uterus, it passes out of the body.Using this hormone ring does not protect you or your partner against HIV or other sexually transmitted diseases (STDs). NuvaRing side effects : Serious side effect such as :

sudden numbness or weakness, especially on one side of the body

sudden and severe headache, confusion, problems with vision, speech, or balance

chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;

sudden cough, wheezing, rapid breathing, coughing up blood

pain, swelling, warmth, or redness in one or both legs

a change in the pattern or severity of migraine headaches

swelling in your hands, ankles, or feet

Less serious side effects such as :

mild nausea, vomiting, bloating, stomach cramps, changes in weight or appetite;

breast pain, tenderness, or swelling;

headache, nervousness, dizziness, tired feeling;

freckles or darkening of facial skin, increased hair growth, loss of scalp hair;