I had tooth sensitivity and swelling in the right side of lower jaw around the lymph nodes. I underwent a root canal yesterday after my dentist told me about the tooth infection that also was a likely cause of this swelling . He asked me to start the antibiotics course for 5 days and it's been couple of days since I started.during the root canal treatment  yesterday, the dentist administered a strong fluid that led to a sharp shooting pain on my lymph node . The dentist asked me to take keterol DT which I took . There was some reduction in the pain. When I got up in the morning today, the area around the jaw swelling felt stiff. The dentist had told me yesterday that it will take a day to feel better. I am meeting him again after two days and there are subsequent sittings.I wasn't sure how much time will it take for the swelling to come down