I'm on the same plan as you!
I'm aiming between 1500 - 1800 but I'm usually more towards the top of the range. I've been steadily losing 1 pound a week which I'm very happy with (a new thing for me as in the past I would have found that discouraging).
I was eating more towards 2000 and I didn't lose so I'm really trying to stay under that 1800 mark now. I plan to reduce my calories a bit as time goes on to adjust for my lower weight (every 25 pounds, I'm going to deduct 50 calories from my daily total).
You might need to play around with a bit to see what works for you and gives you the results you are looking for. A lot depends on your activity level too - I have two small children so I'm pretty active - however, I don't get time to really exercise like I'd like to...but I have a plan that I'm going to work on for that (which involves bribing two young children with goldfish to sit in a stroller while I take a walk each day
- not sure if it will work
).
As for days that you are hungry - you might examine what you ate on both days - if you are eating "emptier" foods on the day when you are hungry, that could account for it. On your lesser calories days, you might being eating foods that are more filling. However, if you are hungry - EAT! Sometimes I just have some carrots (that really helps - the crunchiness of them - yum
) - or I'll have a protein bar, sometimes just drinking water helps - sometimes I need a sandwich or a tortilla with cheese or some cereal or oatmeal - but eat b/c if you don't, you'll just be miserable. It's okay to go over your calories every so often - listen to your body.
Good Luck! You've already lost 9 pounds - that's terrific!