Hi ! I am sorry to learn about your agony, but I would also suggest you to think positively about yourself which is more important than any medicines to get relief from your symptoms. However, I do not think the swelling in your neck is in any way related to the epidurals you had in the past. To know the exact nature, you must get yourself reviewed by your family physician/surgeon, who after examining you clinically, may advise you for an ultrasound/CT scan
to know the nature and origin of the swelling for further management of the problem. Wishing you an early recovery.