Unfortunately, female urinary incontinence is a very common problem.
Stress incontinence in females is common and may be related to childbirth, age, menopause, family history (genetics), nervous system disorders and previous pelvic surgery or trauma. The initial treatment is pevic floor exercise or "Kegel's". Surgery is usually reserved for women with persistent bothersome leakage.
Options include minimally-invasiive vaginal surgery (midurethral sling, TVT or TOT), abdominal surgery or endoscopic injection of urethral bulking agents. Your urologist will be able to discuss the details and relative benefits and risks of each.
Canadian Urological Association Extenstive library of downloadable pamphlets on a wide range of urological conditions
Medline Plus Produced by the US National Institutes of Health with information on virtually every health topic and extensive list of links
UrologyHealth.org The patient information site of the American Urological Association.