Pointers for my diet?

I am currently on my 7th week of my exercise routine. But I feel I'm not losing enough of fat in my abdominal area. Before I started my routine everything about me was okay. But I had a friggin' gut. And now after 7 weeks have ped, I can say I'm seeing decent results. I just feel I'm not getting my 6 pack fast enough. My routine consists of a 5 day a week training regiment. Each day I work on 2 corresponding muscles (example, back and biceps) and then I do a 30 to 45 minute running on a treadmill. I take the required supplements (Syntha 6 and N.O. Explode) and I feel my diet is decent enough. But maybe I'm wrong. The only real impact I made regarding my diet, is that I've totally given up junk food. I haven't eaten ice cream, pastries, candy bars, pan cakes, pop tarts, not even a single gummy bear. Hell, I haven't even eaten any dark chocolate, even though eating a little bit isn't bad for you. But I do eat some fast food still, but I don't pig out. I eat lean cold cuts, fruits, raw veggies, nuts. I don't eat the foods you find in a diet book, because I don't have time in my day for that crap. So tell me, am I doing it right or do I need some improvement?