How can I stop leaking urine when I laugh, cough and sneeze?

Physical Therapy. Sometimes medicine can help. Sometimes surgery can help. I always have my patients see a physical therapist that specializes in pelvic floor physical therapy, i see amazing improvements after physical therapy in bladder control. You can find instructions about how to do kegel exercises, but having a physical therapist is much more efficient / effective.
Leaking urine. See your urologist to have it checked. Sometimes medicine helps if it is not too bad. It is called stress incontinence.

Related Questions

Leaking urine. No cough or sneezing. What could cause that?

Many possibilities. Urinary incontinence can be "stress" associated with coughing, running, jumping etc. Or "urge" incontinence also n]known as overactive bladder. Other, more rare conditions exist as well.Your doctor can do testing called urodynamics, along with a physical exam and a review of your symptoms to determine the type of incontinence and offer appropriate treatment. Read more...
Several possibilitie. Urinary leakage can have different causes. You should consult with your primary care doctor for further evaluation. Many causes of incontinence can be treated successfully. Read more...

What is it? I have frequent urination (worsened by: at night), leaking urine (worsened by: coughing or sneezing, standing, exercise), sudden urge to urinate and vaginal odor.

It might be UTI? Your urinary complaints are suggestive of infection in your urinary tract(UTI). This is not uncommon in sexually active females. This can be verified by getting your Urine checked for infection(Urinalysis(UA). Your Primary care doctor can help you with this problem. Besides UA you will likely need TO TAKE antibiotics to treat the UTI. Read more...