Do i need to delay my FET?

Ki

I’m getting ready to start my first FET. They have you call in to get everything started when your period starts.. well i called them and made an appointment for today which should be cycle day 2, and i haven’t been bleeding since i called just small spotting, not enough for a tampon.. do i need to call back and have them cancel my appointment until it’s heavier again??

I really don’t want to cancel but I’m worried I’ll mess everything up if i go with it.