Sleeping after a mastectomy can be challenging due to discomfort, pain, and limited mobility. However, there are strategies and tips that can help improve comfort and promote better sleep during the recovery period.Experiment with different sleeping positions to find one that is most comfortable for you. Many people find it helpful to sleep on their back with a pillow or cushion to support the surgical site. Placing a pillow under the arm on the operated side can also provide additional support and reduce strain.