If the lump or bump is still there after two weeks then hyaluronidase can be injected into the dump to dissolve the annoying bump. It is a simple and quick fix.
It is always advisable to wait at least one and preferably two weeks for all of the lumps and swelling to resolve before assessing the results of filler injections, especially if they are hyaluronic acid fillers like Restylane, Juvederm, or Belotero in the lips. I recommend waiting several weeks for the swelling to go down after the treatment before worrying about any long-term adverse effects or considering any "touch-up" treatments such as additional filler injections or reversing the treatment using hyaluronidase.