However, your arm will not be very sore and you can resume regular activities. The bandage should be left on for 2 to 3 days, and the arm should be kept dry. If there is any redness, swelling or drainage, call your doctor immediately. Most women will have irregular menstrual periods for several months. Periods may last longer than usual, and bleeding or spotting may occur between periods.
Some women go several months without a period.
Others may have a combination of these changes. However, these changes are not serious. Bleeding and spotting generally stop. Less common effects include weight gain or weight loss, headaches, depression, acne, excessive hair growth or, occasionally, mild pain or itching at the site of the implant. Ovarian cysts may occur but usually do not require treatment.