hi
i got ill end of october with fluey bugs, tonsillitis, colds, tummy bugs etc etc, like you one after the other
i did go to the doctors severalt iems and did get 2 courses of antibiotics for the tonsils and for a chest infection but either seemed to work for more than a couple of days.
I went back just before christmas at the end of my tether and they did do blood tests for glandualr fever, blood counts etc
as it happened they were all positive and i think i was overtired and generally worn out which left me open to getting new bugs, I do finally feel better now but it was new years eve the first day I felt human again, I dont think we are the only ones this has happened to this year, where I work several people have had the same problem.
The only advice I could give is to be a bit kinder to yourself if possible, rest as much as possible, take paracentomal and ibuprofen if it helps and dont do things that dont really need doing.
But DO go to the dr and tell them how you are feeling, there may be somthing that can be done.
My sympathies though, its awful being ill for so long.