First of all, I am so sorry you are going through this.
Second, you need someone to talk to. Talk to your mom. Put all the anger, shame, scared, whatever feelings to the side. You are dealing with something that your mom would, more likely than not, want to know about and help you through. If your relationship with her is not strong or you just can't go to her, then go to a friend. You need someone. This message board is great, but it can't hug you when you need it. And trust me, you'll want a hug or two.
You can do this. But you need to arm yourself with research so you understand what your doctor is saying and doing. No question is dumb. If your doctor doesn't answer your questions, then get a new one. Any doctor who doesn't answer questions or brushes you off is dumb.
Not to scare you, but this is your health and you are the only one who can take control here. Settle for nothing less than you deserve. What you deserve is the best care you can find by a doctor who will answer your questions and be brutally honest with you. This is the time for you to empower yourself and become knowledgeable and fight for your health!
Good luck!!