Man, I wish I saw this thread last night!! I had a really similar first time experience with OC last night (Christmas night is was here in Aus).
I somehow came across a few OxyContin's, which I thought I'd never try. I have a long history of drug use and abuse. I knew this was something I'll probably never get again, but definitely wanted to try (responsibly of course).
I had to 5mg tablets and a 10 milligram one. I've had a lot of experience with Codiene, so I'm quite used to opiates.
Knowing that OC's are a lot stronger, I did my research on here. I mainly wanted to know how much to take. From my readings here, I gathered that 20mgs would be enough for a first-time with Oxy, but isn't much in the scheme of things.
I railed the 10mg tablet, as insufflation seems the most popular method. I though ten would be a good start. From most of the threads on here, I thought redosing wasn't so bad. Not something I would usually do on Opiates once I reach bliss...but I thought the ten was great...and that another ten would be fine. (really thought these were small amounts, esp in my experiences).
Well, the first 10 had me feeling pretty damn good. No sickness or itching. Then I decided to rack the remaining 10mgs. THE SECOND TEN MGS WAS HORRIBLE!!
I threw up after about 2 minutes. Felt great for a second after, then vomited again. I instantly felt completely straight, no euphoria what so ever. All I could was throw up, and pretty violently.
Now, I'm now saying I was in hell. Far from it. I've had a lot of experience with getting sick on Opiates...so I knew to go lie down. But all I could do was lie as still as possible. I threw up twice more. I didn't feel completely horrible, and it was bearable as long as I lay still. I fell asleep pretty easily.
I'm not too stressed about it. Felt sick again today, but ate well and felt fine. Actually took a tab of some of the best acid I've ever had, and chilled out all night today until writing this! Interesting though, I had to take a couple of nausea tablets before tripping today, as my stomach was still upset from the Oxy the night before. Took it right away, though.
Just couldn't believe the complete turn-around from the first 10mg to the second. After reading this thread, it makes a little more sense.
It's not something I'll try to find again...and I love my easily attainable codiene. But an educational first try, and glad I'll know more next time, if ever.