Hi, dear I have gone through your question. I can understand your concern. You have pain and enlarged cervical lymphnode. It may be due to reactive hyperplasia, tuberculosis or lymphoma. You should go for fine needle aspiration cytology or biopsy of lymphnode. It will give you exact diagnosis whether it is cancer or not. Then you should take treatment according to diagnosis. Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using health care magic. Wish you a very good health.