I might be pregnant

I might be pregnant, I’m 19 my period is about a week and a half late but I also took plan b so that fucked up with my period. If I’m pregnant I need to have a medical abortion, and I know I can do that brought planned parenthood. How much would they charge if I don’t have insurance ( I read that hey would lower the cost or work with me). Can I use my HD’s insurance? Would they allow it? What can I do? I can’t use my insurance because it goes through my parents. Also, I know a lot of you will say to no on bc and I will! Can someone just please help me I’m freaking out