Had an erbium fractional laser and the next day woke up with moderate amount of jaw swelling, which has been unchanged for 2 days. I have been applying ice and elevating my head . Upon palpating I felt hard lumps on both sides of my jaw .There is no pain upon palpating the area. Could my submandibular gland be damaged from this procedure? Is this a common side effect and how long does this swelling take to decrease?