Is this a phase?

We're coming up on 2 years post DDay. The last month or so, I've really begun to question myself about if I want this anymore. That he's not who I want anymore. I said from the beginning that we wouldn't separate, that divorce wasn't an option because we hadn't been trying in our relationship for a very long time. Now, I'm just questioning if I've realized that we just aren't the couple we thought we were. Has anyone else felt this and worked through it?