I have to recommend you speak to your OB as soon as possible. It's dangerous to stop abruptly or taper too quickly and you need to be safe.
We have the Thomas recipe listed below. Go to the drugstore and get those items. It also has instructions. That will help with WDs.
As for smoking, I'd wait until you feel better after the opiate WD before starting to quit. I did a taper program with a large group of other smokers back in the 80s to quit. We not only reduced the nicotine content of our cigs every week, we also logged in every damn cig we smoked. Smoking became such a hassle, I've remained a non smoker ever since. There are tons of organized cessation programs out there to choose from. Pick the best one for you that involves others doing the same thing. Getting and giving support during quitting, and after quitting, really works the best rather than trying alone.
Welcome to the forum you have found a good place to start first off what and how many do you take and for how long this matters in how long your detox wil be keep reading the post to get a Idea of what to expect pick up a case of gatoraid you will need it also get some omvies so you have something to due will being up all night get comfortable with the saying ''you just got to be ok without being ok for a wile a hot bath is the best remedy for most of the symptoms keep posting for support the forum is a bit slow at night but more people will answer you in the moring