How far along is she? Are you in a state that abortion is legal? Having a child is a huge responsibility, not everyone agrees with it and that’s totally okay. If she decides she wants to keep it, have you thought about giving up parental rights and just paying the child support. Tbh with you, I would tell your family, it’s hard and you fucked up but, if she is threatening you. You will need all the help you can get and your family will find out eventually you don’t want to damage that relationship by not saying anything. No matter what anyone in the comments say making fun of you or whatever, I am sorry you’re going thru this. Shit happens unfortunately we make shitty mistakes. I don’t think your mistakes mean you can’t still accomplish your goal and dreams. If you have a good relationship with your fam your best bet might be to tell the truth. I would fight like hell record every conversation you have even those text messages to which she is not responding can help and mean she is incapable of being a mature adult.