Kytril&cancer

Is anyone here a nurse or had luekemia before ? I have pill kytril and IV kytril that they give me before i get chemo. But they won't give it to me if i take the pill kytril within 12 hours before hand. But my mother idiodically put it in my pill container this morning and i stupidly just swallowed them all. What will happen if i just tell them i didn't take it ? Because if i don't have the IV stuff the nausea is just. Fucking kill me. Type of deal. I'm pretty sure I've accidently taken the pill and got the iv stuff before and nothing happened.