I've also heard from others who've had the jab that it can take a while to get over a bit of lurgification, so that may be why you're still feeling ropey.
As for me, dissertation is now done, I've passed my MSc (with distinction
) and am now working full time again.
I think another thing that contributed to me struggling to recover from illness is the fact I've not really had a proper break since finishing my old (very stressful) job, starting, doing and finishing my (very intensive, vocational) masters, and starting the new job. Think I need a holiday as much as owt else... 
Milk thistle? I think popular opinion denotes it to be good for liver function but I think "Dr" (cough cough) Gillian McKeith may have also recommended it somewhere, so it may in fact be entirely useless...
Hang in there - you'll start to feel better soon, but do take it easy.