Weight-Loss Am I eating enough?

[gdipilato]

In January after moving to Florida I decided to lose weight. I was 340 pounds and could not walk up more than one flight of stairs without feeling exhausted. I reduced my calorie intake and exercised at the gym and am down 68 pounds in 6 months. I look better and feel better but the weight loss has slowed down. I am 22 yes old and weigh 267 pounds now. I have changed my diet here and there but on average I eat 2000 calories per day. Sometimes as low as 1750 sometimes 2500. I work a fairly physical job and I estimate anywhere from 300 to 1000 calories burned in a work day. I also go to the gym 4 to 5 times a week and do as much cardio and weight machines as I can. I burn 350 to 1000 calories at the gym. I eat breakfast and I eat lots of meats fruits and vegetables. No fast food. Should I eat more calories?. Is there anything else I should or should not be doing. I would like to be down to 225 in another 6 months. Also lately I've been worried because I've been feeling dizzy when standing up. It started happening right after I started taking garcinia and multivitamins. For now I have stopped with the supplements.