I've had Glandular fever, once you've had it it's not something that ever really goes away it lies dormant in your body so if you get stressed and run down it rears it's ugly head again.

The blood test will give a count or number which with a re-occurance can be hard to say if you're in the middle of a flare up or whether it's just coming into it or on the way down, so they might re-test, that's what my doc told me (hope that makes sense)

REST REST REST!!!! Easier said than done I know but it's the best thing eat well and get on a supplement if you need to I find Floradix good!

Good luck hope you're feeling better soon!!