Hi I'm Scheduled For An Endoscopy And Colonoscopy Tomorrow. I've

Hi I'm scheduled for an endoscopy and colonoscopy tomorrow. I've unfortunately picked up a cold virus and am wondering if I can take cold and flu medicine to deal with my symptoms? They contain pseudoephedrine.
Will they go ahead with the procedure if I'm a bit unwell? Rescheduling it is not a good option I've had to wait almost a year just to get booked in.