My mom always told me that if it ever happened to me that it is a life and not a death. Just keep that in mind. It will be OK. Life is something to celebrate, it will be hard at first, but your mom loves you and will be there for you even if it is hard. You will be fine, but it is important to tell her now. It will be easier now then it will be later. She knows what pregnancy is like and she'll probably be able to help you. I hope everything works out as well as it can.
Just remember, it's a life not a death.
-Kristi