Congratulations on completing your first week of sobriety!
The best part is that it never has to be this way again. I also quit cold turkey, it was absolutely the worst agony I've ever endured. Even though it took awhile before things like the shakes and night sweats completely subsided, by one week I was fairly certain I wasn't going to die. For me I guess that was the first milestone of my recovery.
In the earliest days I think it's most important to focus on remaining abstinent and dealing with cravings should they arise. Take care of yourself and reach out to SR if necessary.