I have feelable submandibular, submental and cervical lymph nodes. They’re just below 1/2 an inch and they’re mobile and non painful. I have had them for over 2 years now. I also have no symptoms or signs of any infections and I also have no symptoms of lymphoma. Why may these node be feelable? I’m just looking for a bit of reassurance because on Google it says if a lymph node is swollen for more than 2 weeks then it’s a concern. I’m also very slim.