I've got a lump what I assume is a swollen lymph node left side. I generally feel unwell, achey and pain in right chest and armpit?

Depends. General lymph node enlargement without other symptoms is difficult to diagnose. I would get checked out so that someone could perform the full exam.

Related Questions

Chest pain, swollen or maybe moved bone near collar bone in the side of the heart. Swollen lymph node in neck and arm.

Needs a full. Evaluation. Swollen lymph nodes in the neck area can be serious and require immediate attention even if painless! please seek care! Read more...
Chest pain. Your history is concerning. Go get checked out, at your age i worry about a chest mass, make sure there are no enlarged lymph nodes in your chest, especially if accompanied by any fever or weight loss. Read more...