Ex best friend 😳

So this morning in school I was with my best friend since I was a sophomore (I'm a senior now) and we were talking and all of a sudden my ex best friend comes over to me and says "hey you've taken birth control and I know you have sex a lot so I was wanting to tell you something and ask you a question. Ok well last night I had sex with this guy and we didn't wear a condom and he came inside of me and I missed my pill. Is there a chance I could get pregnant?? You're the only person that I've told about this." My heart literally stopped. I haven't talked to her since January! And she told me that! I didn't know what to think.. So I said that it was very possible for her to get pregnant and she needs to get a PlanB ASAP but she said she doesn't have any money to buy one. I'm actually worried about her and want to help her out and everything but I can't bc her mom hates me (that's why we're ex best friends 😢) idk what to do 😓