Going to the Er even with prescription bottles in hand , I doubt they will do anything , maybe they would give you a day or 2. Which I doubt because it's a scheduled drug and if you ran out too soon they will just think you a med abuser.

You will get a hefty bill too.

Does your Pdoc have a service? When you call the office what happens ? "almost" every Pdoc has another Pdoc that they take turns being on call that can cover in a emergency

I have overserved myself here and there , but never a scheduled drug, abusing them is almost always going to be a red flag and your Pdoc might get you off both.

I hope you find some help and everything works out for you.