The amount of discomfort will depend on how easy it was to take the tooth out. There is usually some swelling and discomfort for a few days afterwards, and it is important to follow any advice you get about mouthwashes and so on, to help with the healing. Some people also find homeopathic remedies help to reduce discomfort. Usual painkillers such as paracetamol, aspirin or ibuprofen will usually deal with any pain. It is best to stay fairly quiet and relaxed for 24 hours afterwards to make sue there are no bleeding problems. There may be some stitches to help the gum heal over. Your dentist will probably want to see you again about a week later to check on the healing, and to remove any stitches.