For the first day, bite gently on the gauze, avoid rinsing vigorously, and keep to soft, cool foods. Do not smoke or use a straw, as the suction can dislodge the clot and cause a painful dry socket.
Mild swelling and discomfort are normal and ease with a cold compress and the pain relief your dentist recommends. From the next day, gentle warm salt-water rinses keep the area clean, and any worsening pain or fever is worth a call to the clinic.