Try this. Fill a small plastic garbage bag (maybe you call them bin liners) with ice. Not a whole lot, but like the size of 2-3 apples. While you are sitting or laying down in the evening before bed, put the bag of ice on your belly. Leave it in one spot til it gets nice and cold and your skin turns pink. Move it to a new spot. Keep doing this until the ice melts or you get bored. Usually 30 minutes or so.
If you want to try an experiment, only ice one side of your belly. In a few weeks, you will look lop-sided as the iced side will be tight and have less fat. Take a picture and post it here if you do!
Anyway, just icing like this is good if all you care about is some loose flab. Try it for a couple weeks and report back.