Brake kick back

My brakes seems to kick back on me lately. It seems to only happen when I'm going around a bend. Halfway around the bend I feel a kickback. It happens almost every time that I'm going around a bend by my house. I know it's not the smartest for any vehicle, but I'm trying to figure out what's wrong and fix it in the cheapest way possible. I'm disabled and very low income, with kids on top of it, so I can't really afford to have a mechanic take a look and/or fix it. Thanks for any help figuring this out.