Get a pregnancy test ASAP!
If she is pregnant, I would really recomend abortion, but I respect your opinions, so if you are against abortion, adoption would be the best choice. But, keep in mind that most adopted children try to find there biological parents later in life. Are you prepared for the questions "why didn't you want me?", "don't you love me?", etc.
What ever you decide, I wish you good luck, and from now on use protection! (just keep in mind that condoms aren't effective 100% of the time, I would know, I am the result of a broken condom, no joke!)