Hello Vernlank,The lips more than any other area receiving injections tends to swell the most. The swelling depends on how much filler was injected, what filler was injected, and your body's natural response. It can take up to two weeks for the swelling to completely resolve. If it is too bothersome there is a prescription steroid that can also help improve the swelling. I'd recommend you contact your injector. You mentioned your injector was board certified. I recommend patients receive injections from physicians from one of the core aesthetic fields (facial plastic surgery, plastic surgery, dermatology, oculoplastic surgery). Not sure if that is one that you went to, but we tend to have the most advanced training for these types of treatments. I hope this helps and good luck.