I feel your pain huni and the only advice I can give is dont fight it!!
The weekend of The Event, I was so poorly, I even went to bed at 9ish on sunday evening leaving everyone else partying:o(( I started to feel better on the train home monday (yeah just my luck!) so threw myself straight back into work and by thursday was feeling crap again. Fought through friday and saturday work, in bed all day sunday and started again monday working.
By last Tuesday I was so poorly, I finished at lunchtime (tuesday is usually my day off) and took myself to bed. Today is the first day I have been out of bed, I have had to cancel all of my clients, thankfully they have been lovely, but god knows how I'm going to catch up this week, but I think if I had allowed myself a little time after the event maybe it wouldn't have hit so hard. I feel better today but completely drained.
As for a doctors appointment..... I have more change of winning the lottery!!!
Hope you feel better soon huni and good luck with the trade test.
H xx