It might be too late, but one thing my brother taught me is to demolish a LOT of orange juice the moment you start to feel unwell (drink it as if you are thirst

It might be too late, but one thing my brother taught me is to demolish a LOT of orange juice the moment you start to feel unwell (drink it as if you are thirsty all the time - I did five litres of it in about twelve hours), crank the heating up to make your bedroom uncomfortably hot and sleep as much as you possibly can. I don't know the mechanism behind it working for us - my brother and I are a bit of an oddity in that we both have insanely effective immune systems (and like running experiments on ourselves), but it works for me. Might work for you, might not!