Funnily enough i've got the start of a cold now (bunged up, sniffles, sore throat, fuzzy head) just after completing a 10k race this morning. The sound advice from what l can gather is always take one days complete rest for each mile ran so by that estimate l can call it rest week until Saturday.
Running with a cold wouldnt be any sort of fun imo and more likely to result in a bad run thus further destabilising your confidence. Stay indoors until you're ready to take on the world again l recks!