Oxycodone made me nauseous. i might throw up. is this a normal reaction?

Yes: An average 25% of patient develops nausea with opiates, you should consult with your doctor to decide if you should continue on oxycodone and treat nausea or try something else.

A common side-effect: Nausea is a common side-effect of opiate pain killers like oxycodone. There are medications to help decrease the nausea. If the pain is not severe, consider lowering the dose.