Great job on starting a sober life again.
The last months of my drinking I had horrible and vivid nightmares. As I got into sobriety, these gradually changed to incredibly vivid dreams. Now, I generally dream the kind of "weird" stuff where some pieces don't match anything close to reality (ie, I don't really have a sister) and ones that do, usually stuff that is on my mind. That's the kind of stuff I remember having pre-full-blow-alcoholism.
Like many people I have heard talk, I have had the "drinking dream" stuff- a couple early on that remain stark as day in my mind. We are processing SO much as we get sober. I believe stuff works itself out in our dreams, and knowing that I do wake up sober, even if it came with a jolt that morning, is the important part.
Keep going!