Hi. I am bipolar too. My first 'event' leading to hospitalization was triggered by the wrong type of antidepressant (SSRIs will do this to a bipolar person). The event was basically a breakdown and crash from a period of mania. What you describe fits the bill for mania.

See your doctor! Enquire about the type of antidepressant you are on and discuss whether you might be having a bipolar response.