Hi,
Welcome to ehealthforum.
You seem to be suffering from âstress incontinenceâ where you tend to urinate when the abdominal pressure increases (due o sneeze, cough etc). Do not ignore your symptoms. Usually this happens in women after age of 45-50 years. Try with pelvic floor exercises/Kegel exercises to train for bladder control. Get a check done by urologist to make sure there is no other underlying serious cause for your symptom.
Visit this link to learn more on your problem, exercises and the techniques:
http://kidney.niddk.nih.gov/kudiseases/pub
s/bcw_ez/
Take care.