I have swollen lymph nodes for 2,5 years now ( two in the neck) and they are 1-1,2 cm in size. i had ultrasound back then and dr said they are probably reactive, but i can still feel them today. blood work was fine. shld i go for further tests?

I consider those of normal size (not swollen) and they are usually easily found in the neck. Unless there were other history or findings that suggest a problem I would ignore them. You don't try to fix normal.

Dr Singh and another doctor agreed

You may feel the nodes every couple of weeks, if any of the lymph glands doubles in size, becomes painful, ulcerates, or other nodes become enlarged, or you develop fever, or lose weight, you should see a doctor. Wish you good health!

The previous physician's points are well taken, However, for peace of mind have a general surgeon examine your neck to determine whether these feel like old burnt out viral infections or whether a biopsy would be worthwhile.