If you notice swelling or a lump underneath your arm before getting the COVID-19 vaccine, call your doctor to get it checked out. If you develop swelling or a lump under the arm where you received the vaccine, use a cold compress to reduce the pain and swelling. If the symptoms get worse or don’t go away after a week, call your doctor. The UPMC Magee-Womens Breast Cancer Program specializes in preventing, diagnosing, and treating breast cancer. Magee-Womens Imaging can help with early diagnosis and detection. For more information, call 412-641-4700 or 1-800-649-4077, or request an appointment online. Patients in central Pennsylvania can conveniently schedule their mammogram online or by calling 717-230-3700.