Congratulations on your lst flush! Isn't it great to feel better?!
Now, if it were me, I probably wouldn't flush with a cold. However, your cold may just be allergies or something of that nature and be gone in a day or two.
I have read posts here on curezone where people have flushed when they had a cold and did great, so I guess it's entirely up to you.
Just be sure and tell us what you decide!