you wait for one and 3 comes at once!

hii :) ok so i wasnt actally waiting for any illness, but i just had to be hit down with illness's 6 weeks into my first job!, one week in i had a cold, 4 weeks a reaction to a injection and now i have the 3 comes at once thing! cold,hayfever and a eye infection! grrr, any tips stopping yourself from getting ill? yeash just a random ramble todays :) bye x