Oh honey, I’m so sorry. The first thing you need to do is to find out for certain whether the baby is yours with a DNA test. Then you need to talk to her to find out whether or not she wants to keep the baby or put it up for adoption or have an abortion. Unfortunately for you, even though you may be the potential father, the decision really lies in her hands.
You need to find out these things immediately. If you would like her to terminate the pregnancy, you will need to talk to her, maybe with your parents and her parents present. It has to be a mutual decision. Hopefully you two can come to a decision together. If she refuses to speak to you about it, then you need to contact a lawyer and find out what your rights and responsibilites will be in the other two situations (her keeping the baby and raising it, or giving it up for adoption).
If it turns out that the baby is yours and she decides to keep it, you need to decide very quickly if you are going to be a part of the baby’s life and help to raise it, or if you will simply be an absentee father paying child support. You will have to pay child support either way, but whether you want to raise the baby with her (while she’s with another man) is your decision. You should definitely talk to your parents about this whole situation if you haven’t already. They might not be very happy to hear about any of this mess, but after they calm down, they will have some sort of an opionion.
If she refuses to get a DNA test right away, you will be in the very unfortunate position of having to wait until the baby is born (if she decides to have it) to find out for certain whether it is yours. That is why you need to be very insistent that she get the test done immediately. But legally, I don’t think you can force her until after the fact.
If she refuses to get the DNA test now (and let you know for sure) but then she has the baby and then you find out that it’s yours, she might decide to give the child up for adoption. In that case, you may be able to contest the adoption and choose to take custody of the baby, yourself. If you don’t want to do that, you can sign away your parental rights. That is why I think you should talk to your own parents. They may want to help you to raise the child.
The other possibility is that you won’t know if the child is yours until it is born and she wants to keep the baby. Then you have to decide if you want joint custody, want to give her complete custody, give you visitation rights or if you want to terminate your parental rights. I believe that you are legally obligated to pay child support unless you legally terminate your parental rights, but this last situation I’m not clear on. That is why you should contact a lawyer immediately to find out about both your rights and your responsibilites.
I’m so sorry that this happened. I hope it works out for all of you.