When you put the plug in the jug, you have to deal with that three letter: YOU.
It took me awhile to realize this, but I used alcohol to escape. Even early on when alcohol was fun, I was escaping reality for a more enjoyable alcohol induced one. Then my alcoholism progressed to where I was using it as a crutch and a coping mechanism.
Learning how to live with yourself in a sober environment takes some time and practice. You may be experiencing new emotions or old emotions in a different manner. As you said, you haven't had that many feelings in the past 2-3 years.
This is a new experience for you and there is a learning curve. You are like a new pirate who hasn't gotten your sea legs. It takes a little time and effort to adjust to your new life, but it typically gets easier with practice, being gentle to yourself, and allowing some time to adjust. As the saying go, this too shall pass.