I have a 2cm enlarged lymph node in right supraclavicular and a 1cm node in my left supraclavicular, GP done all possible bloods, I have folate aneamia which I have had for years. He measured the lump and just said will keep an eye on it.

I tire out really easily, get short of breath when going uphill or climbing stairs suffer night sweats and also have them during the day, I feel so run down all the time, started suffering with swelling in fingers and ankles. 

I had a 2nd appointment booked for GP but they cancelled it and I had to rebook for 2 weeks later. I already have a history of ovarian cancer and had full hysterectomy at age 23. I feel like my GP just keeps brushing me off. 

Can I demand a biopsy of the enlarged lymph nodes or do I have to go along with just being brushed off.