Swollen lymph node for a year?

[photogirl2222]

Ok, so I have now had a swollen lymph node on the left side of my neck for about a year. I am about to be 22 and I am disconcerted with the fact that it has remained swollen for so long. I have a history of sinus infections but since summer I have been trying herbal remedies such as ImmuBoost, olive leaf extract and claritin D(which is not herbal I know but it seems to help). As a result of these I have not had a sinus infection for about 6 months which is the longest time I ever remember going without antibiotics.
Since I have not had a sinus infection I'm still wondering why the lymph node has not reduced in size. I also now, in addition to the lymph node, have a lump behind my jaw, below my ear on the same side. I have been told that this one is probably muscle but I'm not sold on that yet.  
I saw and oncologist who seemed completely unfazed by these two things, and thought a biopsy would be and overreaction. I feel it is strange however for it to have lasted this long. I have been told not to worry about it, but this is something that is always on my mind.
What else could be causing this?
Thank you so much!

[photogirl2222]

Thanks for your response. I think I might do that. It's just hard when even all of my family members keep saying they said it was fine and that it was probably from your sinuses so don't worry about it. I also would not like to go through a biopsy if it really isn't anything so i've been really torn about it.
Thanks again for your help

[iam1butterfly]

A year is an awful long time to have a swollen lymph node. And, I'm surprised that
your oncolgist wasn't alarmed by the lenghty time period. But, sometimes pre-existing conditions complicate matters. And, maybe that's what the oncologist was considering. My mom had a swollen lymp node on the right side of her neck. Since she had had extensive dental work around the same time that the swelling started, doctors believed that her lymphatic system was reacting to an infection in her gums. A needle biopsy was performed and that returned negative. However, the swelling persisted and a surgical biopsy came back positive for classic Hodgkin's Disease. I can't say what is happening in your case, but if I were you, I'd get a second opinon.