It is usually 1 month after thyroid surgery before you can have intercourse. Thyroid surgery is a relatively major operation in the human body because it takes place in the neck, where there are many nerves and blood vessels. After thyroid surgery, the thyroid gland and the surrounding lymph nodes are removed, and the neck is usually closed with only tendons and the skin and subcutaneous layer, and a drainage tube is placed inside. If there is no fluid or no blood flow, the drainage tube is removed when the amount of fluid is small and the tissue under the skin is left to heal on its own. If the time of intercourse after surgery is too early, it may affect the healing of the incision and may even cause the neck to bleed again, and the bleeding may compress the trachea afterwards leading to asphyxia, which is still very dangerous.