Hi there,  l can understand your mind is all over the place,  l can empathise with you,  l too have developed a large lump in my neck. I've been seen by a ent specialist fast tracked by my gp  during my first appointment he just asked questions and examined my neck and put a fine tube up my nose and down my throat,  it was painless and over in a couple of  minutes he then said l will need a ultrasound scan and a biopsy, a fine needle aspiration , I've just received my appointment for 5  May,  I assume you will probably have the same tests,  from what I've been told they are very quick and simple tests.

I know it's easier said than done but try not to worry the waiting is the worst part,  take care and let us know how you get on. 

Thank you for the response. I hope everything goes well for you too! I just know it's going to be a very long 9 days till my first appointment then even longer if I need more tests afterwards.