In think it's easy to underestimate the emotion wrench we feel when we quit, Trying2. For me my relationship with alcohol and drugs was the longest lasting relationship I had an as adult.
Years of drinking and drugging took their toll - it took several months for me (3 or so) to feel anything like normal again and a few more months to fully trust those feelings.
Of course, if this is concerning you, seeing a Dr is never a bad idea, if only to help put your mind at ease
D