Gums are puffy &hurt by molars (right). hurts to eat. lymph node under chin on same side hurts too. feels like soon whole right side will puff up :(?

It's possible: Could be the start of an infection, but that's only a guess since you cannot be examined over the internet. Make a call to a local dentist who will take a radiograph, examine you, determine what ails you, explain it and your treatment options, and then treat you. Feel better soon.

Dental infection : Dental infection will not resolve on its own with home care. The most common type of the dental infection is a tooth infection or combination of tooth-gum infection. In order to get appropriate treatment it is important to know the underlying cause for this infection. Dental infection is a curable condition. Rec.: see your dentist for evaluation, x-rays and treatment.