My son is doing well, I however am not. Maybe tomorrow will be better...
It's pretty common for people here to suffer from depression, especially after the relationship ends. And while you have the added joy of a young son, it is also pretty sobering to raise a child as a single parent, especially when the other parent has a mental illness.
I know everyone has a different journey and each of our circumstances can make things harder/easier, but I just wanted to say that the year after my marriage ended, I cried every day. Every single day. I didn't think it would get better, and could not believe that things had ended up the way they did.
There really is a path through this -- keep reading, and posting when you feel motivated to do so. It's been 4 years or so since I left N/BPDx and I have never felt as good as I do now. I'm dating a wonderful man, and for the first time in my life it's a healthy relationship. It was painful getting here, but worth it. Sorry, I know that's very cheesy to say.
It doesn't stay this hard forever, and it can get even better, as long as you're willing to do the work.