Welcome to SR, but I am so sorry for what has brought you here.
I was married to my husband for 8 months when I found out he was using meth. He was displaying a lot of the same behaviors you have seen in your husband (up for days, watching a lot of porn, moody, etc). He was able to stay sober for a few years, but he relapsed last year. Things went from bad to worse. I've decided to file for divorce.
Living with an active addict is enough to drive anyone crazy. You start to question everything, even yourself. Take this time to focus on YOUR recovery. Read the stickies on this forum (lots of helpful info) and try to regain some peace in your life. I definitely agree that should have boundries to protect yourself and your daughter. I hope your husband gets help, but that is up to him.
Remember, you didn't cause it, you can't control it, and you can't cure it.
I felt like I was going down with the ship. His addiction was taking the joy out of life and I had to let him go. No one can tell you wheter to stay or go, that is your decision. Just know that you are not alone and keep coming back for support.
Hugs