Awaiting axilla scan

Hi wondering if anyone could help me, the last 6 months my lymph nodes have been swollen under my left armpit in been to the doctors on many occasions they have prescribed me antibiotics three times it hasn’t got any better two weeks ago I discover a change of shape in my left breast it become larger and a little tender two days after this I found a small hard lump under my armpit the size of a pea it’s hard and cannot be moved but is not painful,  the oly pain I had is in my kneck near my rib cage and in my back it’s almost a dull ache I have an axilla scan on the 28th of august wondering if anyone could advise if I should try and get it pushed forward or go back to the doctors as my back and kneck pain is getting worse, thanks Caroline.