I have a strange lumo growing in my arm and I need help!

Hi, My name is Scarlett. Recently, there has been a stange lump growing in my arm. Its more so underneath my arm and going into my armpit. At first, I thought it was a boil of some sort. But, to my knowledge I was under the impression a boil but just a round cirlce shape. The one I have started off that way but now when I feel it, its more a werid rectanglular shape and its getting bigger. Im so scared of what it is and I need help!

Scarlett

It sounds like you should have it examined by a doctor who could tell you what it is and treat it. As long as you don't know what it is, there's nothing you can do to get better.