Thank you for sharing your dream with us. I can see how disconcerting that such a dream would be. Please take everything that I share to the Holy Spirit as He Alone gives the accurate interpretation.
Here are some rhetorical questions. Do you trust or lack trust of your husband’s fidelity in general? Is there a lady not necessarily the one in your dream that might be distracting your husband or might be in the “driving” seat of your marriage, unbeknownst to you? Could this friend/or her sister in your dream be influencing your marriage?
These questions are not to cause alarm but need to be asked and reflected on. If any of this resonates with you, consider asking your husband if there is another woman.
May the Holy Spirit give you clarity, strength, peace, and grace in Jesus’s Almighty Name I pray, Amen!