I usually have a very regular period 20-34 days cycle. But this month my period is late. I'm supposed to have my period two days ago. I have always been safe with my boyfriend when it comes to sex. the only change in my daily routine is the acai berry and colon cleanse diet i've been taking starting from the beginning of this month cycle. I usually have all the PMS symptoms, sore breast, abdominal pain, mood swing etc. But i didn't have any of those this month. before when i was late i just took parsley tea and immediately had my period the next day. I took my parsley tea since yesterday but nothing came out. I wonder why is that. Do the acai berry pills and colon cleanse pills i've been taking have anything to do with it?