SuziQ..hi there. I know how it is to be nervous when hatching! It sounds like you have done everything right. It takes some much longer to pop out than others. I've had Chicks hatch less than an hr after pipping, and others took up to a day later! I have found though that if they don't hatch on their own, there's usually a reason. Its usually best to not help.
Good luck!
Good luck!