Today I noticed I have several swollen lymph nodes around my neck. Shud I be worry? Also I feel tired and weak. I have been stressed lately frm work

Stress/lymph nodes? Stress did not cause the lymphnodes, but can cause poor sleep and thus tiredness etc... Small nodes around your neck, if the come and go etc. Then not likely to be serious--often viral illnesses do that. If they are persistent and enlarging in sizes, consult with your doc. In the meantime, stress relief, eat well, sleep well will make you feel better. Good luck.