I would go back. Sometimes things can get 'tucked under' in there, and things might have 'moved around', making it easier to find. You'll get a fresh pair of eyes on it, and also they will prob be more likely to call the on call gynae during the day than at night.
It's best to get it sorted. After all, you put it up there, have not taken it out, therefore it must still be up there, no?