Lymph Nodes

I have two swollen lymph nodes one on the back left side of my neck the other on the left side of my neck. My doctor did a series of blood work which came back normal. Does that mean i don't have cancer of the lymph nodes or what does that mean. The lymph nodes are still swollen and causing me pain. Like neck stiffness and spasm like pains in my neck. Can you please tell me what all this means?

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