I turn grumpy and grawrawrr if I'm at home and just need to be left alone. If I'm out somewhere, I won't mention it unless a frens wants to hug me or wants me to shout.

Rodarian, exploit your illness! Get films, get quilts, get books, get soup, yoghurt and honeys, and A MILLION COUGH SWEETS and hot water with lemons, and make an illness fort in a comfy chair and wait it out until you're better, distracting yourself with soothing things.