I had incredibly vivid nightmares during the last 6 months of my drinking (last year), which turned into very vivid dreams as I got sober, and I now sleep well and dream "normally" (ie, I sometimes remember and sometimes don't like a normal person!). I take seroquel every night as a maintenance drug.
You haven't been sober that long. Sleep can take awhile to readjust to (your) normal; do see a dr if it persists - and if you find that the usual things like "no caffeine late/turn off electronics/etc etc" (and do you nap? That can make night sleep tougher for some) don't help when you adjust any habits like these.
IME, it just takes time.