Worried about being counter-productive!!!

Ok, so I started this journey almost a month ago and am scared that I am not going to get results that I really want on a LONG TERM basis. So far I have been averaging about a 1-2 LB weightloss a week which is realistic, but I have yet to get to 1200 calories a day, I am close but not all the way there....and I am burning around 500 calories a day....is this eventually going to be hurt me? I know that everyone is different, but I need to know what the best balance is for calories in...calories out. I pushed myself today and did 25 min on the treadmill, the 30 DS DVD workout, and an hour of Zumba burning 1100 calories total but my net calories was like 50....PLEASE HELP!!!! I need advice!