Don't know what to believe

Sometimes I feel like everything is normal and we are just like we were 1 year ago. But there is something in me that says there is something wrong. I don't know if I am creating my own black hole. I just have this feeling that he is not with me anymore. I will never forget how he acted the first week he got home. His quote "I am just in transition" and "I guess we just got married and had kids too young". I mean I always thought we were in this together but lately I just feel alone. I feel so alone.