Oh lord op, this is your rock bottom now, he put you there, but right now you need to heal, how long this takes god only knows, but you can only go to ' rock bottom before you start going up again,
You need to take care of you and your son, just one day at a time, but you will heal op, but you have to look after yourself first, your grieving your marriage, it's been an ewful start for you this year, it's OK to ' fall to pieces ' but then when your abit stronger you'll put the pieces back together,
It's unforgivable what your h has done, sounds like he's being honest now, which again it's very hard to listen to ' yes we want to know it all, we pick at it , chew it over and over,
Please take time and look after yourself op,
Keep a diary how your feeling each day, sometimes it's good to write it down,