My lymph nodes are swollen but only on the right side of my body from my armpit to my waist. They feel like they are huge but only hurt if you try to palpitate them. They are not painful, but I do feel a pressure, fullness sensation when I lie on that side, or rest my arm close to my body. Waiting on blood test, chest X-ray and Ultra sound results. Question is why is it only affecting the right side of my body?