Post-pill infertility.
One hundred and fifty-one nulligravid women and 63 parous women stopped taking low-dose sequential oral contraceptives in order to become pregnant. During the first post-Pill cycle, 39% of the nulligravid and 54% of the parous women conceived. These figures have been compared with data from the Royal College of General Practitioners survey in England, in which 13% of nulligravid and 17% of parous women conceived in the first cycle after ceasing to take combined oral contraceptives. The percentage of nulligravid women not pregnant six months after withdrawal of low-dose sequential formulations was 19% compared with 32% after withdrawal of combined oral contraceptives. The corresponding figures for parous women were 5% and 21%. Available data suggest that after withdrawal of low-dose sequential oral contraceptives, the incidence of post-Pill infertility is lower than that after withdrawal of combined oral contraceptives. The extent of this difference is 16% three months after withdrawal of the Pill and 10% six months after attempting pregnancy.
D003273:Contraceptive Devices; D003276:Contraceptives, Oral / Q000009:adverse effects*; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects; D003279:Contraceptives, Oral, Sequential / Q000009:adverse effects; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000139:chemically induced*; D007434:Intrauterine Devices; D010298:Parity; D011247:Pregnancy
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003279:Contraceptives, Oral, Sequential