I am finally back on board and looking into this.
For anyone interested, I was bitten by the Australian Red Back spider several times on a toe (For international folk, it's in the Black Widow family but unlike the international members, usually gives a full dosing of venom when it bites). I have attached a photo of the little bugger here. I got a good dosage, coupled with the fact that I seem to be lucky enough to be in the minority that are severely affected by the venom.
What made matters worse was the local doctors had no experience with a bite like this, or the severe reaction I had, so the entire cook book of pain killers was thrown at me. In order I had Paracetamol, Ibuprofen and then Endone (multiple times) which didn't touch it. I was then canulated and given a strong IV morphine shot, which helped, but only for about 20 minutes. Magnesium Sulfate was also used after attaching me to an EKG monitor. I was then given IV Fentanyl which helped, but for an even shorter period. Finally I was fully admitted and put on a Ketamine pump along with a Oxycodone PCA (Patient-Controlled Analgesia) pump. Over the next 4 hours the Ketamine dosage was dialed in and I was finally able to get some rest after being up at that point for 36 hours. I remained in this state for 4 days, before being sent home with more painkillers and told to come back if it becomes unbearable again.
It took another 4 days to get back to some normalcy going through withdrawals after being on such a high dosage for so many days. At this point I am still a bit sore, but nothing worse then had I stubbed my toe.
I highly recommend if you come to Australia, you avoid being bitten by one of these buggers. It likely wont kill you, but you will wish you were dead.