I know this is late in coming but call 911 if you feel totally out of it. They can help figure out what is up and maybe the emts can just check you out. Another option is to call poison control at the number which should be in the front of your phone book or google for your area. I had that problem with Fentanyl patch and thought I was gonna die, poison control helped alot, they will contact emt if you need them.
Even if you are better, it would be good to have the emergency 911 number, the non-emergency number to your closest ambulance/emt center if there is one, and poison control number, in large print, by the phone.
Poison control is extremely helpful in sorting these med issues out and has info not just on the pain meds but the side effects of your chemo type drugs as well.
I hope you are doing better. I'm sorry I wasn't there earlier. I know it can be a terrible feeling.