You probably need a new will now. If you wish to pursue this, ask me and I will give you the names of some attorneys who do wills.
If you have given your spouse a power of attorney, cancel it as soon as possible. Until you do, your spouse has control over your property and can sell it or give it away.
If you have a living will in which your ex-spouse has the right to tell the hospital to pull the plug and let you die, you may want to have that changed.