****{Hugs}}} When I first discovered my husband was using drugs, my almost 3 month old was facing open heart surgery. I couldn't deal with all of it, there was no way, so I ignored the drug problem basically. I am so sorry you are having to deal with things on your own, and I just can't imagine that. Keep your focus on putting one foot in front of the other - get through however you can.
If there is any good news, it is that your husband confessed on his own and asked for help...within a year of this mess starting. He has a long road ahead of him, so as others suggested, you need to educate yourself to understand things better. There is a lot of literature out there, this site helps, and meetings of course. Personal counseling is not a bad idea either.
Take care.