"Great, never felt better" sounds like hypomania, a possible side effect to one SSRI/SSRI-related antidepressant, let alone two. Freaking out, screaming, suicidal ideation are also adverse reactions to one SSRI/SSRI-related antidepressant, let alone two. The doctor should have told you to watch for those reactions and contact him/her immediately if they occur. Mood swings like that are, unfortunately, rather common side effects for these drugs when given to children and adolescents and are part of the reason they are generally not approved to for use by them...that and that they aren't particularly effective when used to treat depression.
by the way, depression can be a side effect of long term chronic use of stimulants.
