2 swollen lymph nodes, 1 in neck, 1 behind ear for 7-8 yrs. Went to ENT, he said its nothing. 1 in neck give slight pain nd is quite big. Is it ok?

Need to examine. Probably ok as it has been there for years. You may feel the nodes every couple of weeks, if any of the lymph glands doubles in size, becomes painful, ulcerates, or other nodes become enlarged, or you develop fever, or lose weight, you should see a doctor.
Have a healthy diet, exercise, drink plenty of water, have safe sex, if you do, and get HPV vaccine,. Wish you good health.