Hi.. Can understand your concern.. As per your complain if you have got stitches inside the mouth just above the upper lip the first thing you should do is to maintain a very good oral hygiene.. As it is normal to get swelling after any surgical or traumatic procedure you need not to worry as the swelling will subside as the healing will proceed and inflammation will reduce.. If i would be your treating doctor i would have definitely prescribed you with antibiotics and painkillers to relieve pain and prevent any infection.. You should also be given a steroid shot like dexamethasone so that you do not get much of swelling and pain.. You should avoid smoking until the healing takes place as the chemicals and heat can lead to delayed healing as well as heal will cause increase in inflammation which can further exaggerate swelling and pain.. You should do warn saline gargles.. Avoid hot and spicy food.. Doing cold compresses can be relieving.. Hope this information helps.. If you find the answer helpful kindly write a positive review and click on I found this answer helpful as a token of appreciation.. Thanks and regards.. Dr.Honey Nandwani Arora..