Awww, after all of that. Well at least you know that you've done everything you possibly could have known to do. Don't allow yourself to do what I call The If If If Game. (See I do that to myself... "If I had..., or If only I had...").
You did EVERYTHING you knew to do, and more than most, and more than enough, and it just wasn't meant to be. Bless you for trying so hard!
I hear that tears in the bathwater, if there are enough, are like bath salts. /sigh I've had a couple over lost babies. Try to add something to your bath salts like maybe a little aromatherapy - lavendar, or add chamomile to your bath before you get in so it simply swirls around you and relaxes you.
Then try to imagine a big hug today, too. From me.
I'm so sorry for your loss.