How to tell when a lump in the neck is a swollen lymph node or something else? my lump is not sore either. on left side only!

Get examined: I believe these are reactive or benign reactions to your previous story of runny nose but since it is low on neck and on left, have a clinic doc examine that for you. The definite way to tell noninvasively is by radiologic imaging or even a biopsy But those procedures are only planned if your clinic doc saw your person, evaluated your lump and decides. We can not tell by just reading your notes.