the first symptoms you'll notice is constantly puking your guts out and uncontrollably nodding out....you may puke a lot anyway though, I don't wanna scare you. Keep moving is all I can say, take a walk...If you're high on oxy you can walk for hours with nowhere to go...Drink a 24 ounce rockstar and some water...caffeine can help, as simple as it sounds...The thing is, when you OD you basically go into a nod and never come out of it, but you have no idea it's happening...
If you're not too nauseous and you're just catching light nods here and there I wouldn't worry, if you feel overwhelmed, your limbs feel heavy and you feel like you're slipping away, you could be in trouble...Is there anywhere you can go without it havng to be a big deal?