Have terrible mood swings, then i feeling happy and sad, very aggressive verbal, then acting like nothing happened ?

Depression ; others: What you describe falls under irritability as well as impulsivity. The first is a cardinal and common symptom of depression and it fades away as depression gets worse. However , there are several other possible causes for these two symptoms but it is not possible to diagnose without a full medical/psychiatric evaluation, please see a dr. Treatment is available and is effective. Good luck.