Hey Annachronism, (cool handle, btw!), how's it going? I have BTDT with a husband who just didn't ever get how awful opiate withdrawals are. When I got myself clean, (cold turkey, no help, not even a couple benzos so I could get some sleep), I was on my own. At the best of times, he was not a supportive person, so when I was going trough the withdrawal, acted like it was just a matter of my "willpower" to quit the opiates. (Of course, it was a different story with his drinking. Quitting was just to haaaard.) 8) Also, my own child was older when I became addicted, and I cant imagine trying to take proper care of a little one while in w/d. (Just think what a new, improved mom your little guy will have once this is over! Just one of many life enhancing benefits, but a major one!)
It's probably a good idea either to send your child elsewhere for a few days, such as a grandparent if you have family nearby and willing, or for you yourself to go somewhere you can either be alone or with someone with some compassion, and more importantly, some understanding of the process of opiate withdrawal. Do you have any friends you could crash with for a few days? When I did my CT withdrawal, I had just moved a thousand miles from anyone and everyone I knew, so I basically holed up in my room with my laptop for a couple weeks, and thankfully had a nanny who helped take care of my kid. (He was 11 then.) You just really need time alone, peace and quiet, and if you are to be around anyone, it should be someone who "gets it."
In the meantime, I can't recommend loperamide highly enough. A largeish dose really will help with the symptoms, and I also always recommend chamomile tea to help a little with relaxation and even sleep. It's not much, but it helps somewhat. You will still feel like ten miles of bad road, but these remedies do help enough that you might be able to get through this with a little less discomfort.
You can do this, and once it's over, you are going to feel so good about yourself, and you won't be shackled to the pharmie slave chains. In my case, I was amazed, once I was past the worst, to contemplate just how much time, energy, money, planning, and thought had gone to my addiction.
If you need a listening ear, shoot me a message. It was about six and a half years ago I went through what you are dealing with, and it's still quite fresh in my mind. I am sending prayers and the best of wishes your way.
XO Justine