I Am On The HCG Diet, Taking Shots Every Day.

I am on the HCG diet, taking shots every day. I track my period using Clue, and am on day 30 of my cycle. On day 29 I stopped the HCG shots expecting my period to start. it hasnt started. I now am concerned I no longer had the HCG in my system but have to maintain the VLCD, and am worried that my period hasnt arrived