What Are The Chances Of Getting Pregnant Without Ejaculation?

I had sex with my girlfriend 3 nights ago. We didnt used any protection. The time of climax I didnt ejaculated inside her. I ejaculated outside and removed my penis from her vagina. Also, my Penis was not completely inside her. Can she become Pregnant ? What are the ways to avoid pregnancy now as Birth Control cannot help now because its 3 days now. Help me out. What are the ways of abortion ? When we will know that she is pregnant ?