The key is you had issues and dealt with them. If you had taken those issues and allowed them to become your excuse you would still be having the same issues and worse. Once you accept that there is an issue to be dealt with it can be overcome. The process to overcome the issue isn't typically easy, but if you are willing to work at a solution almost always there is one to be had.

Postpartum issues are serious and sadly most people just don't realize that it's real. People wonder how a Mother could kill their baby, "she was just a normal sweat person I can't believe she did this" is typically how people that know the Mother talk. That Mother wasn't herself and needed serious mental health help, but didn't get it as it's not something people talk about. It's one of those dirty little secretes that nobody lets parents to be know about and to watch out for.

Good job getting help and dealing with your issues. Sorry that you had to find out the hard way who your true friends are, but at least now you know.