Yeah my friend above is right. You're doing the right thing here so stick with your plan. But the saying, "there isn't enough air in the room to breathe" is an effect from wd's. The sleepless problem is a classic. It's not easy cleaning ourselves up but it's darn worth it. Don't give in to the demon addiction as it has so many ways to distract you from your goal. Stay strong and you will persevere. The best of luck to you. You can do it!...ike
Honey:
We can't possibly give you advice on what you should take or not take, because we aren't doctors and dont' know your medical history.
I think you should see a physician, and get evaluated. Tell them the 100% truth; all of it. Don't let them put you on methadone, I hear it is HORRIBLE to detox from. But you need to be evaluated for blood pressure, heart rate, etc.
How old are you? Your daily rate of intake was high, and I suspect you've got another week of feeling miserable, then it will slowly get better...BUT. The heart pounding worries me. If you have your own doctor, please get to see him/her asap.
If not, I'd go to an urgent care, walk in clinic, or ER. Tell them what is going on...and of course, be prepared to have a thick skin. Sometimes medical personnel discount folks who have opiate addictions as less than human. That pisses me off to no end.
Good luck, and stick around..