You should take another test to confirm the results and see a doctor. Or you can just go and see the doctor. They will do a test. It is very important to see a doctor.
Unfortunately I do not know your family history, so I cannot tell you how to tell your parents. After you confirmed the pregnancy, take your boyfriend and go and tell your parents. It might be difficult, but it must be done. You will need their support and help. It is not just you that are going to become a mom, they are going to become grand parents.
The chances are good that you will also have to tell his parents.