Using again?

I'm starting to think the Husband is using pot again. All of a sudden he's eating chips and salsa at 3am when he gets home from work. And this morning he got up at 8:30, had a bowl of cereal and went back to bed. These are things he did was he was using. Do I know for sure if he is doing this? Nope. Am I OK with not knowing? Nope. I hate not being in control of my thoughts. I hate always thinking my Husband is mad at me or lying to me. How do I get away from this kind of thinking? I have no idea but I found some books online that might help me find the answer. So I'm off to the bookstore to *hopefully* find a couple books to start reading to help me through this rough time.

*Update
I bought the book Codependent No More by Melody Beattie. I have read the first 4 chapters and already know this book is really going to help me. Earlier in the day I text the husband and asked if he was mad at me since he still hasn't spoken to me since Sunday night. His response was "this is not the time, nor the place to describe how I feel..." I responded "Can you at least tell me what's going on, I'm worried about you." His response "Nope...I need r help telling the Drs what I'm like without the correct meds...Hold on for the ride! I love u!" My response " So you would rather put me through hell than talk to me and tell me what's going on?" His response "Yep, this is all about u...Yak..." My response "I never said this was all about me but damn don't you care about how I'm feeling at all? I care about how you're feeling and I want to help where I can but if you don't talk to me how am I supposed to know how to help you?" His response: NOTHING. There ya have it folks. He obviously doesn't want my help bad enough to want to talk to me. Well that's all for tonight. I need to get some sleep since I will be getting up with S at 6:30 am.

~Kristin