I'm 26 and my chest hurts and the ekg came back clear and so did the chest xray. does g.e.r.d make ur chest hurt really bad?

Yes: GERD and acid indigestion that refluxes into the esophagus can most definitely cause chest pain. Don't let that always be your default answer though, had a cardiologist colleague of ours that passed away with Tums (calcium carbonate) in his hand thinking his chest pain was heart burn when he was really having a heart attack. It can go both ways, exercise caution, and always talk with your doctors.