What do I do from this point on? Should I bother getting plan B?

plan b is a very good idea. If you can't talk to your parents maybe you have another adult that you can talk to or someone else that you can borrow money from? If you have insurance you can go to the doctor and ask him to prescribe the "old method" of plan b... it's one of the birth control pills just taken differently it should be covered under your drug coverage... I hope you figure something out, your situation is one of the few situations that i believe plan b to be a good thing (i'm really not a big fan of it) so i hope that you figure it all out. best of luck