The objective of the study is to compare the oral contraceptive (OC) SH T00658ID over Ortho Tri-Cyclen Lo administered for 13 cycles to healthy female volunteers between 18 and 50 years of age who request oral contraceptive protection. Subjects on a levonorgestrel (LNG), norgestimate (NGM), norethindrone or norethindrone acetate containing oral contraceptive in a 21-day regimen suffering from hormone withdrawal-associated symptoms such as pelvic pain or headache or both, and willing to continue OC use but to switch to SH T00658ID or Ortho Tri-Cyclen Lo.