When taken in smaller, frequent doses (daily), HCG actually fills up your bloodstream with non esterified fatty acids, which absolutely kills your hunger. You'll get your daily hunger pangs at the times you usually eat, and then you'll have a protein shake or a chicken breast and feel compltely full.
I've personally done a stint of hcg at 200 IU ed, and lost 18 pounds in 2 weeks (including glycogen dump). I was eating 1400 calories (just protein and veggies) a day.
I tried it a second time, but i ate more (around 2000 cals) and it didnt seem to do anything. It seems like the HCG diet only really works when your fat is limited to under 30 grams a day and you eat no carbs. Needless to say, this is not very muscle sparing, but it does get you super fast fat loss (with some muscle loss on the side).
Wouldn't do HCG as a chick though. Nasty dark brown mucus is gonna start seeping out your snatch. If that's ok with you, you can just pretty much pin wherever. Just pinch a fat roll on your belly with your left hand and pin into it with your right. Rotate belly quadrants every day. Make sure you eat no carbs and super low fat, and have as much protein as you can (via chicken, canned salmon, or shakes). I got over 190lbs of lbm so maybe you'll have better luck with not losing lbm.
Edit: 500 cal a day is retarded, dont do that. Also, you seemed to imply that 1000 cals was your "usual" intake, so you might need to learn to count calories because there's just no way you're eating that little and not going completely insane.
Also, the brown mucus smells bad too.