Hey, I'm close to the same age and unraveling too. This time in life is chaotic as is, add depression on top of that and you're mind can become a total mess.
I agree that to begin the search for answers a good starting place is counseling of some sort. If only to properly learn the logic and science behind your situation. And it's also good to get stuff out, but you can also do that here, too.

Welcome to PC.