Do you think I tore my elbow UCL ligament?

the inside of my elbow around my UCL ligament had been hurting ever time i would long toss for about 4 month and at baseball practice Thursday and i was in outfield i got a fly ball hit to me deep in center(380ft). I reared back to throw and as i came threw with the throw my arm just had this terrible snapping popping tearing noise. the pain made me fall to the ground. all the other outfields that were around 40ft away said they heard my elbow snap as well. i visited the high school trainer right away he said he umed i tore my tommy john ligament. since then the inside of my elbow has been swollen all the way up to my tricept, i can move my fingers but there weak, and i cant bend my arm straight or lift my forearm. im going tuesday to get a contrast MRI with the dye. by the way i am only 15 years old what do y'all think?