I can understand if you had a sexual experience outside your marriage and the condom broke being worried. However, under the worst of circumstances, the risk of transmission during a one time condom break is less than 2 percent. And you tested negative. If you tested negative at 28 days or beyond, you can confidently resume relations with your wife. Guilt does terrible things to us but don't let it ruin your life.
Your details are vague at this point, please state your exposure, if you had one, for us to give you a subjective evaluation.