Gland in my neck

Hey everyone. 

Ok so I have had a gland in the left side of my neck that has been swollen for maybe 3/4 years... but I was at the doctor yesterday for a different problem I have at the moment but she had seen that's I had a gland sticking out of my neck when she was talking to me she then was touching it and asked me how long have I had this etc and had it got bigger I told her yes that it has got bigger  I can see it when I'm looking at my self in the mirror when I'm doing my hair etc she seem worried about it? But I was told by a doctor a year half ago/ 2years ago that it's normal to have glands that never goes down?? This doctor told me yesterday that isnt!! It's scared me now but I have to get all my bloods done now on Monday and she sending me for a ultrasound and she said they might have to take a biopsy?