Advice on feeding twins?

I had twins this past Monday and I am feeding them. I was wondering if anyone had any good advice on feeding. My are very sore because they don't get a break and it was different when I fed my first son because it was only him. I know the people at the hospital say it isn't suppose to hurt but I am not sure if they hurt because of improper latch or just because they don't get a break. Any advice would be awesome!