Swollen lymph nodes since headlice visit

Hiya all,

New here!! 

My children had headlice so I sorted them out and they all gone, of course being a mam I caught a few(they gone now). 

I came down with spot on my neck that itched and a lymph node behind my right ear, got one bottom of neck. They don't move not painful size as a 1p coin. Second time I have a lump when headlice make a unexpected visit, could I be reacting to them? 

Worried and anxiety me thinking the worst  I phoned doctors and told them and they said it sounds like a lymph nodes and it can take 7 WEEKS to go down well this is now the 4th week. 

I still itch a little and spots cleared on the 3rd week so thats grand. Doctora give me Betnovate scalp Application and told of it doesn't go down to have bloods. I'm a panicker :(

Could someone give me advice please im so worried  

Forgot to mention i been having irregular shivers.