It would not be unusual to still be in pain 5 days after an extraction. Keep taking over-the-counter painkillers (if needed) and return to your dentist for review if not improving (and is painful rather than just tender) to exclude a 'dry socket'. If this is the case, the socket may need to be packed with a sedative dressing. Antibiotics not needed unless you have signs of spreading infection.
When the dentist took out the tooth he said that the hole was a bit on the big side and he put something in my gums that would dissolve. I tried to find out what they were but have forgotten all that he said. Do you know what they are/were?