This is late, I apologize and I hope your problem has resolved by now.
But, if it hasn't, I've come to find a good system for getting out of sleep paralysis.
It happens to me a lot, usually when I'm totally exhausted, and I find that the moment I realize what's going on, the best thing to do is to focus on one part of your body. A small part, like your pointer finger of your right or left hand. Using that finger, focus on feeling the sheets of your bed (or your blanket, pillow, whatever it's near.) Don't think about the fact that you feel like you can't breathe: I talked to my doctor about this, and she said that even though you feel like you aren't breathing, you are because your body is the same as it was when you were asleep, and since you were breathing when asleep, you are still breathing. It's just the panic that makes you think you're not. Anyway, focus on feeling the sheet and if you can, focus on just moving your finger up, to the side, anywhere you can. Usually for me, the moment I can move my finger, I can move my whole body. But it's so much easier to focus on moving just one small part, instead of trying to shake yourself out of it.