Honey, I am so sorry that you are hurting.
What hurts the most is that you did nothing to get yourself into the situation that you are in. Right? You were living in your own home, minding your own business, and husband was the one who screwed up.
Once again, and not to nag, have you gone to AlAnon?
You may find a lot more people there in your same situation, in regards to living with relatives or having a hard time finding child care. Here, we can help you all day with difficult child problems. But an AlAnon meeting in your home town, well let's just say that sometimes, we have to open the strangest doors to get to where we want to go...