Welcome to Gaia! ::

I am sorry about your situation. I'm thinking maybe you could talk to someone in your family that you are close to, or if you're not able to do that then you really should take your mother off to the side and tell her the story. But before you tell her what is going on, ask her to be open minded and not to over react. I know that she'll be upset, but in order not to push your sister away she's going to have to be open with the stituation. It's going to suck b/c she's going to have to tell your father sometime.

Has your sister figured out what she's going to do with the baby? Is she going to keep it, give it up for adoption, or abortion? Is her partner in which she says that he "raped" her and they also had consitual sex going to stick by her? Does he even know?

Well, how old are these guys having sex with her? I can't believe a 13-15 year old is having sex (and I'm going to venture that they are older) and no one is pursuing statutory rape? It doesn't matter if she "consented," I'd look into your state laws.

Unfortunately, this is the scary part, but your parents NEED to be told. It's not fair to her health or the baby (regardless of her decision she will make). She needs medical care, most states she is past the point of abortion dates without special cases. That's why she needs to get to an OB ASAP to find out the gestation.

It's scary and she may get mad, but please tell your parents, her health and well being is much more important.