Can my neck lymph node infection have anything to do with my thyroid nodule?

Thyroid nodule: Lymph nodes in the neck frequently swell and then regress during minor viral illnesses. So this may have nothing to do with a thyroid nodule. However, that thyroid nodule should be worked up. Ideally with an ultrasound-directed biopsy and you should be seen by an endocrinologist. A thyroid cancer can spread to lymph nodes, although the more likely explanation is a virus.