Swollen neck lymph nodes

Hi,

im 29 and have had 2 swollen lymph nodes in my neck for nearly a year now. They are quite big in size (1.5 -2cm)

I saw a specialist and had a ultra sound which they only scanned one and said they were fine from the look of them - they did tell me they was going to do a biopsy but never did and now been discharged.

The past 4 weeks I've been having serve indigestion, stomach discomfort and the doctor has told me she thinks it's gastritis and put me on omeprazole but I've now just found a 3rd lump! 
 

im starting to worry and now think this is more, I have private healthcare but this seems hard work as you still have to go through your GP! Any advice would be great ️