although i wasnt in pain as long as you but some years ago i too had tooth extracted and was in such pain that i convinced myself that the dentist had taken out the wrong tooth, it was worse after it was taken out than before, so i went back and explained this and was told i had something called dry socket, not really sure what this is but think it has something to do with the blood flow after extraction, i was given penicillin and this helped enormously, so ever since when i have had another taken out i always say that i am prone to dry socket and ask for penicillin. in your case it sounds like you have had some really difficult work done what with having to have stitches, so i can only suggest you go back and explain everything as you may have an infection, after all it could prevent further problems later, really hope this helps