Withdrawal is different for everyone. For instance, I get extremely horrible GI symptoms when I stop for the first four days. Then the shakes start for the next 7-8 days. Then I can write my name again. Anxiety is persistent for much of it especially when I'm still shaking. Insomnia goes away when the GI symptoms subside.
Thus my name. Withdrawals are no fun. But only a doctor can tell you what's going on.