Buprenorphine has a mean half of of 37 hours (though it is quite variable) according to wikipedia. Without mentioning the ROA you used to administer the bupe it is not possible to come up with anything close to an accurate current level and this is compounded by the variability in your own personal metabolism. Regardless those were ridiculously huge doses and even taking low end estimates you probably still have enough in your system for a pretty effective blockade. You can try and inject the "oxy" (whether you mean oxycodone, oxymorphone, oxygen, or Occidental Petroleum I don't know), but if it is an mu-opioid agonist you will likely experienced diminished effects.
Then again you might experience full effects so in no way should you assume you will be safe taking more than a regular dose.