Just found a swollen lymph node on right side of neck, its sore now that i have bothered it. should i worry? i have another small one on same side

Likely benign, but: The neck is a very common place for mild lymph node enlargements. We do about 5-6 lymph node biopsies a day-from the neck-and most of them are benign. However if rapid growth is noted, or if bigger than 3cm, or if other symptoms develop you need to have it checked. The most common cause of enlarged lymph nodes in the neck are a viral illness, a dental infection, skin infection and "other".

Somewhat: I would recommend following up w a physician for an exam. Most likely related to sub-clinical (mild) infection that will resolve. That said it could represent many other problems that are more serious if it does not get better, such as hodgkin's lymphoma, in your age group. That said, you need a physician to evaluate you for a history & a physical as to whether the lymph nodes are even enlarged.