I have been on Colonix for 5 days. The firdt 2 days I got out tons of plaque. Now I have a headache and watery and itchy eyes as well as sneezing constantly. I am allergic to cats and this is the same feeling I get around cats. If this is die off cleaning symptoms.....how long should they last 2-3 days. If it lasts longer than a week is there a problem?