I keep getting swollen lymph nodes in my under arm.around 4 months back i got one and it was infectedthe doctor removed it through a minor cut and t?

Not lymph nodes: Appears to be other processes than lymph nodes which don't just swell unless metastatic disease or severe infection present. The nodes are high up and adjacent to veins extending to arm. Sounds like you have had several infected sebaceous cysts or sweat glands that when not responding to soaks and antibiotics require local exceision.