The first day is the worst of it. At least for me. Just know that it’s your body detoxing which it needs to do and once you’re through the first 3 days (which for me, each day got easier and easier) you’ll feel a lot better and able to focus on what you want to do when you’re free.
That said, if you sense something is utterly wrong, crazy shakes, hallucinations, etc. definitely think about help.