It probably it is grounds for an annulment. You can try to do it on your own--if you fail, the court will just let you try again...and again...and again until it gets tired of you. But it will be easier on your soul and much quicker if you'd hire a good local family law attorney and let him or her do this for you. I don't know how much attorneys in your area charge for a suit of this sort.
Good luck!!Ask a similar question
Sign up to receive a 10-part series of useful information and legal advice about the divorce process.