hello and welcome to HCM,
If the lymph
node are swollen and they are painful then in all probability you are having a systemic infection and since you are already on antibiotics, wait for a day or two for their effect.
If the swelling persists and in fact worsens then you need to consult an ENT who may need further investigation to pin point the cause of the swelling.
Later on consider Imaging study like the CT and FNAC
Hope you recover soon
Dr Sriram Nathan