I really need some help here.

/lounge/, my girlfriend is on an injectable contraceptive called Perlutan, which is injected monthly. We had a fight because she forgot to get the syringe to take the shot today. She was not cooperative to talk to me like a responsible adult. I freaked out and called her a psycho bitch for wanting to get pregnant and ruin my life. Keep in mind, I had cum inside her all weekend, plus she told me several times if she ever gets pregnant she's not aborting, no matter what I say. Now she says that she's not gonna take it this month at all (to spite me), and if anything happens (she gets pregnant) "she won't come looking for me".

I can't fucking have a child at this age /lounge/. Doesn't matter if she comes looking for me or not. I don't want to be like my father. If it happens I'm gonna kill myself and I'm 100% serious about it. So anybody who knows about this type of contraception: how likely is it for her to have gotten pregnant from me shooting loads inside her this weekend? The last injection is obviously a month away. How likely is it that she turned fertile again one month after receiving the last injection?

TL;DR: Girlfriend possibly pregnant, wanna kill myself.