Opioids Strange effects from oxycodone lately ?

Hey guys, I've been takin oxy daily for a few years now and have never had a problem. This past week there have been some weird things that I can't figure out. I take my oxy as usual and during the day everything is always fine, but when I take it around bed time it causes me to throw up. I normally take a dose a couple hours before bed so I can fall asleep while it wears off. For the past 3 nights ( prob about 2 hrs after ingesting ) when I go to bed I end up gettin up an having to throw up. If I drink water I will throw the water up almost immediately, but yet if I eat something like crackers to help then I'm fine. I haven't changed my dosage or anything at all. Does anyone know what could cause this ? I don't ever feel sick, tired or any of the other systems a "high" dose would cause yet I just get a sudden burst of nausea and go throw up. Any help would be appreciated. Thanks

And if this has any impact I am taking roxi 30mg.
1 in the morning and half every 3 - 4 hrs.

Well bro I am sure you know by now, nausea is one of the main side effects of oxycodone and most other opiates. Maybe now that youv been taking them for a while the nausea is starting to happen. Just see how long it goes on for, if it happens for like a long time then just tell your doctor.

Talk to your doctor about ondasetron (Zofran)