Welcome back Lila, glad you are making and attempt to quit - you wont' regret it in the long run. Lost of the symptoms you list are very common when quitting and during withdrawals, i'm glad you are seeking medical help as well.
It does take time- the physical withdrawal istelf can last for a couple of weeks, and some things can take weeks/months to start clearing up. Inosomnia is very common, almost everyone has problems with sleep for a while.
Keep in touch with your doc and give it some time, things will defintely improve if you give sobriety a good chance.