When you are depressed it is sooooo easy to become overwhelmed just by everyday living. The agitation, helplessness, hopelessness and (of course the ever famous) constant tears are all part of the game.
You are among friends here. Members can offer the comfort of knowing what you are going through. Many members having been there or are there themselves.
It might not hurt to try medications and therapy again. New medications and new therapy techniques are developed all the time. As Stefno said it could take time but the right combination can pull you through.