Pretty sure I'm pregnant... what now?

Ummm....
I'm not quite sure what to do now.

Here's the rundown:
I was quite late with my monthly time, so I took a pregnancy test which came back positive (I only had one left out of a box).
I am 18.
My parents do not know I have sex.
I will not get it aborted.
I AM medically insured, but it's under my parents.

I was thinking take another box (two tests) before I actually tell my parents about the whole situation??

I don't know...
I don't see this as life ruining or anything like that, actually. It's just I have no idea where to go from here....

llblovesejw