After a mastectomy, you may experience some uncomfortable sensations such as pain, numbness and pinching around the location of the surgery.
You will be bandaged up around the surgery area to protect you from infection, and you will be taken to a recovery room to heal. A nurse will monitor you to make sure you are recovering safely. The nurse will check on things like your body temperature, heart rate and blood pressure.
As you come into consciousness as the anesthesia wears off, you may feel pain and/or nausea. Definitely let someone know how you are feeling as soon as this happens. You will be given pain medication to reduce your discomfort and help you through recovery.
Once you leave the recovery room, you will be admitted to a hospital room where you might stay for up to three days. Depending on the intensity of your surgery, for example if you had reconstruction as well as a mastectomy, you will stay in the hospital for a longer period. If your surgery wasn't as major, you may stay in the hospital for a shorter duration.
After a large surgery like a mastectomy, antibiotics and medications are often prescribed to fight and prevent infection.