Lymph node

Can anyone offer me any advice I have a lymph node that is 1cm on my neck it has been gradually getting bigger, it has been there since February I have now had a couple of smaller ones appear near it. I went to my doctors in February  they booked me in for ultrasound which I had done they said it was asymmetrical and reactive but no Concern to do a biopsy. My symptoms I have experienced are severe night sweats my bones ache and I feel so tired all the time. my doctors are refusing to listen to me won’t even see me for a follow up appointment I’m really worried and not sure what else I can do I don’t want to keep on at the doctors as I’m sure they are fed up with me but I can’t shake of this feeling something isn’t right. Do I have any rights to ask for a biopsy since more smaller lumps have appeared?