Growing lymphnode on neck

Hi all

Started with a lump / lymphnode around 5 weeks ago, it has continued to grow...had bloods all came back ok, CT, xray etc, ultrasound dr said it looked suspicious. Had a biopsy 10days ago and still no results even tho doctor had put it thru as urgent, said they need to do extra immuno tests on it??? Is that normal???

 

Bloods all came back normal, not been ill recently. Found a few more swollen lymphnodes on scans etc