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.

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.