The Fighting Has to Stop

I can't take it. We fight and argue like little kids. He doesn't understand what the affect is. My therapist was right it is extremely toxic living here with him. My emotional well-being is being affected, dramatically. I need a vent; someone to talk to when I'm down and out-- someone I can call all hours of the night and speak to someone I trust. Shit... the only person I trust now is Stephen and when he's at work... what can I do? What am I supposed to do?