It's been quite a ride so far

So earlier this evening I got a random friend request, from somebody I had no mutual friends with and had never seen before in my life. I accepted because, hey she was cute, why not.
Her first message was, "do you know [my adopted parents names]?" I said of course and we started talking, a few messages in she asks if she can basically drop a bomb on me, I say sure.
She tells me that she's actually my aunt and that I'm her sisters child.
Now honestly I wasn't surprised, I've suspected that I'm adopted for years... not many people actually have a child when they're nearly 50, I look nothing like my family, the list goes on.
She told me a lot of really specific details and her story matches up to what little I know about my childhood. My "parents" were my mother's aunt and uncle, my "father" was adopted so I am actually not related to them by blood.
I got to talk with 4 aunts I didn't know I had. They're all pretty awesome.
Turns out I was essentially stolen as a child. My mother was 19 (my current age) when I was born, and couldn't afford a child so she joined the military. I was meant to be temporarily signed over to her aunt and uncle while she served. They abused/manipulated her into signing me over completely and then took off to another city, then another state. They've kept me from most of my extended family all these years because of that, I'm assuming out of fear of them telling me.
I talked to my mother for the first time tonight. We have a ton in common and we look like sisters. I hope to meet her someday in the near future.
I'm terrified of how my current family will act or what they'll do to me when they find out that I know about all of this now.
Sorry for the whole life story, I needed to recount tonight's events and get them off my chest.

TL;DR: a stranger messaged me on Facebook, she's actually my aunt, told me I'm adopted, introduced me to my mom and a bunch of family I didn't know existed.