Instead, the pack is discarded and the new pack started. Most women do not have a period at all when they take OC's continuously. Few side effects. Nausea, weight gain, breakthrough bleeding and fluid retention are sometimes reported. Painful menses frequently improve.
Menses continue unless used continuously.
Some women have side effects. In some women the endometriosis will progress. Estrogen and progesterone continue to circulate in the bloodstream.