The average for women is about .5 pound per day. You lose more your first week then it drops off. 1 pound is normal, I always lose a few pounds on day 1, then it drops off. Also once you start getting closer to your goal weight your losses may also start to slow. I just started a new round, but on my last round I lost almost close to 10 pounds the first week!
My wife started on the 2nd Jan and she has lost about 18 lbs. So initially you can expect a good weight loss. Just make sure that you really stick to the HCG Protocol.