I am extremely sorry to hear that. It's going to be confusing and painful for you for awhile. You'll think about them all the time, you'll miss them, you'll remember them at the oddest moments. That's the way it goes. It hurts, it hurt a lot. You've got to keep living, though, you've got to keep moving into the future, because you carry their memory with you. You are a part of their mark on this world. Fight for that, because it's worth it.