Hawk350

A few days ago, I was driving down the highway, and I got into the throttle a bit....after that, the car becgan missing accasionally. I though nothing of it...maybe some bad gas or something. I went to the gas station, got some dry gas, fueled up and it still occasionally missed. Well, it's been a few days now and this keeps happening. WTF could be causing this?Cound it be the fuel pump going bad on me or fuel filter getting plugged up? My car has 26,000 miles...any ideas would greatly be appreciated. I also checked the plugs, they look fine. wires are on tight.