i have been taking terbinafine for about two or three weeks now . and usually i do not go to the bathroom every day unless i have an upset stomac,any way for the last three mornings i have went to the bathroom ,and noticed that my stool is green ,it has never done that before last week it was normal i want to know if the medication can cause that ,i feel fine otherwise ,just worried about what is goin on ,i did eat some greenbeans last week and greens the week before but that should have already passed through my system shouldn't it?