I've been on prescription medication for a considerable bit of my life, and one of them when you don't have it is equated to the withdrawal symptoms of heroin... I've had that happen and it isn't a fun experience at all... I can't even begin to say I know what you're going through having never been there, but keep your chin up, try to sleep as much of it off as you can, even though that may not be much, and don't look back whatever you do.
There are some natural vitamins that might help you sleep during this time - try taking a tryptophan supplement. It should be over the counter at your local CVS/Walgreens/etc... It's just a pure extract of a compound found in turkey that metabolizes into seratonin which puts your body into a more relaxed/calm state and makes it easier for you to sleep. Your body does this naturally, but certain compounds (such as opiates) impede the production/metabolism of seratonin and that causes you to not be able to sleep, so that's where a seratonin-inducing supplement comes in. After a while on drugs in the various families that impede seratonin production your body really slows down production and it takes a long time for it to ramp it back up. It's non-habit forming, completely natural, completely safe, and completely legal (naturally, as it's over the counter!) I've used it for years to protect my sleep, which is pretty much the most important thing for someone with my condition.
If you feel comfortable with it call your local pharmacist and ask them if they have any thoughts on natural supplements to help you through this. I'm normally not a proponent of natural remedies as most of them are just shams/placebo effect, but this is one that is scientifically backed, and the pharmacists will likely know other things that could help you get through this. They're legally considered doctors and are bound by the Hippocratic Oath as part of their license and as such your call and anything else is confidential - they can't say anything to anyone.
If you ever feel yourself being drawn back, well, you have us, you have your camera, but aside from us I'm sure you have family and good friends who will show you support as well. If you can, find someone close to you that you trust to support you through this. Keep yourself distracted and busy during the day as much as you can. You'll get through it and won't regret it one bit. It's just going to be one hell of a ride getting there.
I know this was been long winded... I just know that in the few times talking to you in RRTP you're a pretty cool guy. I had no idea any of this was going on, but now that I do I hope somehow I can help you continue to find your way out of it!