The duration of vaginal dryness can vary depending on the underlying cause and the treatment used. In some cases, it may be a temporary symptom that resolves on its own. But in other cases, it can be a chronic condition that lasts for an extended period of time. Vaginal dryness during pregnancy usually resolves after giving birth but in some cases it may persist and require ongoing management. It's best to consult your healthcare provider for an accurate assessment of your condition and to determine the best course of treatment.