I did not feel pain at the scene and refused medical treatment. Now, a few days later, I am in pain. What should I do?

That situation is extremely common. Generally, when people are at the scene, they’re concerned about their family members, their vehicle damage. They’re jacked up on adrenaline and they don’t feel the pain until they get home and things calm down. Jurors are people just like you and I, they will understand if you go to a doctor a day or two later, that is not the death of your case.