Hello Shannon and

to allnurses.com. You will enjoy this site but there are things that you may read that will scare you. Remember that people come to this site to vent. Once they over come the bump on their road, they are fine.
I have never been good in math. I am an RN and still not good in math. It doesn't stop me from being a good nurse. If I would of let math run my life I wouldn't have ever become an RN. You need to have faith in yourself. All I can say to you is look at what you have acomplished. You have your BS, if that is not enough motivation for you then I don't know what is. I suggest to start slow. One class or two, since you already have kids. See how you do and move on.
Being a mom of 3 is a great experience that no one will take away. This will help you a lot in nursing. I don't just mean pediatrics but the fact that you are your children advocate is what nursing is all about. Good luck and take it slow you will make it.