My sister is pregnant at 15

my name is Rachel and iam 17 years old and my sister who is 15 years old told me that she's pregnant I think I should tell my parents,but she told me she would hate me forever if I did what should I do?

They are going to eventually find out!!! Its not something she can hide for long!!

tell them its best

find out if she wants to keep the baby. and guide her through that. if you see she needs more help than you can give her, then you have to tell her that you have to tell the parents. If she's going to ahve the baby then they need 2 know for insurance and the hospital and all that. I think they'll notice her growth

you need to tell your parents... your parents will be able to handle the situation better than 2 teenage girls...
it's way more safe if your parents know. they'll know what to do... everything can go a little smoother with adults... let's face it... they know what to do... they'll figure it out...
don't let that weight be on your shoulders.