Breathe! We all have been there and felt the same. You've had a good day w/the kids and your little one is napping. You are w/family and that's all that matters right now.
You need to stop the stinking thinking about you are "that bad and unloveable". You have to remember...it's him, not you and you can't take anything he says or does personally. He could have been married to a movie star who was perfect in every way and he would still have flipped his lid. He was predisposed to MLC and there was nothing you could do about it. It's not you...it's him!
Give yourself some breathing room to heal. You are still very fragile and raw from this experience and you may very well distance yourself from others, but that will change as you heal. Stop beating yourself up!
Enjoy the day and embrace the love, fun and happiness that are around you.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.