I'm 17 aswell, and just had a baby march 3rd.
I believe in fate aswell, but not when you did nothing to try and prevent it.
Yeah i'm pretty positive it's too early. I'd wait a couple weeks, maybe even give it a few weeks and then test again. They have a test called first response, and you're able to test 5 days sooner, they also have 2 tests in the box.
About the family part, I don't know how you're parents are, my mom was in the bathroom with me when I took the test, she even went out and bought it so I can't really help ya out there unless you tell me what kind of attitudes you're parents have. I waited to tell my step dad though, he was dissapointed but got over it quick (i'm the baby of the family)
i always find it easier to write letters to my family when I need to talk to them about something serious.
Sorry I couldn't be more help!