Hello ma am. Hysterectomy is a complex procedure which involves the removal of vital organs. These organs are supplied with blood for survival. During the process of hysterectomy this blood supply is cut off, which can cause a throbbing sensation in the region to persist after surgery. This is just an attempt made by the body to complete or establish blood supply with an organ which is supposed to be there, but is not, which the body fails to recognize. Also, during the procedure certain ligaments which used to previously hold the uterus are now either free from their function or are changed to support the present organs, like the urinary bladder. This can at times apply pressure on the surrounding organs, which could be what you are experiencing. Unfortunately there is nothing much we can do other than wait for a complete recovery. If this lasts for longer your doctor might have to look into options for treating the same. Hope this helps. Best wishes.