I woke up this morning with a Malteser-sized lump in the side of my neck. It feels like a knot but it's actually visible. The lump itself is sore to touch but my neck isn't stiff. I'm also tired all the bloody time but I'd put that down to a few late nights and early starts with work. I've made a same-day doctors appointment for later but I'm really worried... Has anyone experienced something similar?