Are you sucking in? If not, you definately dont have a gut. And your trying to cut? If i was you i would definately be trying to bulk right now, unless thats as big/strong as you ever want to be.

If your trying to cut, the cardio should probably be done right after you workout, as your glycogen stores are really low then. If you decide to switch to bulking, the cardio should be done on opposite days as workouts as it makes it just that much harder for the body to get in calories to build muscle.