You know you can't trust her.

Do you really want to marry someone you can't trust?

How did you find out?

Did she lie to you previously?

Why would you think this was the only betrayal?

How sorry is she and what is she doing to make it up to you?

Take care of yourself. Prioritize yourself.

If she's supporting you, don't make a decision until you finish getting your degree.

and don't get her pregnant.

Your "girlfriend" doesn't care about you. She sees this is hurting you and doesn't give a damn.

Stop wasting your time and dump her.

Yes, it's going to hurt but it's better than what you are going through now.

and take better care of yourself.