Your coverage should last until the anniversary date of the policy, which is usually six months or one year from the date your coverage began.
However, YOU may cancel your insurance coverage at any time without penalty. Simply notify the insurance company that you are canceling your insurance. You are entitled to a refund of any unused premium payment.
In addition, the insurance company can usually cancel your policy before the anniversary date if premiums are not paid or if there was a material misrepresentation on the application.