I have experienced the short term memory loss, quite a bit actually! My family gets mad at me cause I can't seem to remember the simplest things. Also, my hearing is affected, I believe by, the drug use. Congrats on your clean time!
Don't have an answer to help but have experianced what your talking about.I think for me my mind is more relaxed,I'm more relaxed and I access information easier,or maybe being in a fog your mind isn't trying to process as much info making it easier to focus on one thing at a time.We're sharper when straight,just have to relearn how to function,another reason withdrawals are hard,hang in there!
Have not experienced this after withdrawal either but congratulations on your cleantime.
I would go see a doctor that is concerning let them know hopfully they can help you.