I experienced a little of that around 2-3 months but to be honest by 6 months I'd made a lot of changes - I rediscovered how to have fun sober, I was growing to like who sober me was, I'd lost most of my drinking friends and made new sober or more normal drinking ones...I was building a sober life I wanted to live.
I think there's two phases to recovery - the first is stopping drinking...and the second is learning to be ok with that.
How much work have you done on the second phase?
D