iud, progestogen, oral contraceptive pill, spermicide, secondary amenorrhea, contraceptive, pessary, mifepristone, progestin, tubal ligation, clomiphene, nifedipine, tubal pregnancy, oral contraception, diethylstilbestrol, pelvic inflammatory disease, luteal, acetylsalicylic acid, oral contraceptive, cefuroxime, flecainide, dihydroergotamine, patent ductus arteriosus, isotretinoin, procardia, quinidine, catapres, hydralazine, norethindrone, clomiphene citrate, indomethacin, vaginitis, orchiectomy, alpha blocker, spironolactone, thyroxine, zidovudine, tricyclic antidepressant, anovulatory, nitroprusside, stress incontinence, hydroxychloroquine, menorrhagia, protamine, hyperemesis, medroxyprogesterone, ketorolac, progesterone, implant, labetalol, endometritis, follicle stimulating hormone, amenorrhoea, contraceptive pill, combivir, phentolamine, rifampin, nefazodone, indinavir, glyburide, paracentesis, lichen planus, magnesium sulfate, male hypogonadism, myelomeningocele, chorionic villus sampling, leflunomide, estriol, norethindrone acetate, neomycin, valerate, adhibit, anticonvulsants, oestrogen, endotracheal tube, intrauterine, gonadotrophin, ergotamine, ferric, chlorthalidone, tubal, epidural anesthesia, tricyclic, luteal phase, diaper dermatitis, epididymitis, trichomonas, eardrops, enovid, chancroid, gentian violet, pill, hmg, pyloric stenosis, penile implant, carboxymethylcellulose, anovulation, oophorectomy, nitrofurantoin, orchitis, ovulate, pimozide