Excellent job! Damn someone actually dieted correctly and did cardio. It's rocket science. And what Deepsquat said is DEAD ON. You need to find your target heart rate (usually posted somewhere in your gym according to your age) and stay within that range for 30 - 40 minutes. This will burn FAT. If your heart rate goes too fast, your body will stop burning fat. It will instead start storing the fat and burn immediate sugars. If you don't have enough sugars, guess what it starts burning next, muscle. Keep it in your target range and you will be amazed at the difference in results. Also, try doing your cardio first thing in the a.m. after fasting all night. Your body has to resort to burning its fat stores (but keep it in the target range).
Ever see some big fat asses going 100mph on the stairmaster every day and still be soft and fat? This is the reason.