Not wrong, just different

So, this is embarrassing, but I have recently discovered (by way of others pointing and laughing at me) that I don't pronounce the word "ancient" like a normal person does. Apparently, the rest of you say aint-shunt. Me, I say aink-shunt. I'm not sure why. I called my parents and made them pronounce the word. Turns out I didn't learn it from them.

I felt slightly mollified when I read in Merriam Webster's that there are two ways to pronounce ancient; both my way and everyone else's way are legit. But no one else really seems to use my way. Where did I first hear this word?

Rob suggests that it was taught to me by my ank-cestors.