No drama. Son, the drama is just beginning...on your part, anyways.
You kicked her to the curb, well done. But that's just phase 1.
Now comes the hard part.
If she's not preggo, life is good. But if she is, you may have to give the performance of a lifetime to convince her to get rid of it. And the worst part is, there are two vastly different performances you may have to give in order to get her to visit the clinic...and it will depend on why she got knocked up in the first place. Did she get knocked up:
A) To try and get you to marry her
or
B) She heard her biological clock ticking / wants a kid regardless of the circumstance
???
You have to figure out whether it's A or B in a damn hurry, because that's gonna determine how to play this.
If it's A, you have to make her believe that you want to marry her....and want to have kids SOMEDAY, but not right now. Make her believe that you want to concieve a child in wedlock...how it's just not right at this time. That if she goes to the clinic and takes care of this, you'll forgive her deception and take her back and eventually put a ring on her finger. Of course, you won't...but you will have to get her to believe you will long enough to get her in there for the procedure.
If it's B, that's a lot tougher. Best played by making her believe you will be the very definition of a deadbeat dad. That you'll have zero contact with her, that you'll pull up stakes and move to Canada so you don't have to give her a single red dime. Start pointing out how hard she'll struggle financially...how she's going to give her child a shitty life. You have to do a whammy of a psyche job on her to make her doubt that she can be a good mother. Whatever it takes to get her to the clinic.
Good luck man, I hope you guess right.