I'm sorry to see you didn't achieve the result your were looking for with your filler. With the development of white bumps in the subacute period, there are several possibilities for what could be happening depending on what type of filler you received. Many fillers that are based on hyaluronic acid will absorb additional water after their initial placement, and this may create a volume of filler large enough to blanch the overlying skin. On the other hand, any filler can cause an inflammatory nodule if the body reacts to it either because of scant amounts of bacteria that make it into where the filler is or the filler itself. I would return to where you received the filler for an evaluation, diagnosis and possible hyularonidase injection to break up the filler, as likely these white areas won't improve significantly if they're related to nodule formation. The lip is a relatively high risk area for filler, as it is so mobile, the vermillion skin so thin, and the vascularity so robust.