I agree with Ultrama, what you described may not be bi polar, instead this sounds more like BPD. Also being on an antidepressant on its own you are lucky you havent gone manic on it. Meds really should be taken as doctors advise and while seroquel is a pretty horrible drug to be on it definitely can help with negative and violent behaviours. Again I agree DBT might be a good option for you to check out.

*hugs* its not fun going through a mental illness, I hope tomorrow is a better day.