The most common physical symptoms that follow a car accident involve pain, soreness, and stiffness. This often occurs from the seatbelt or from the force of the crash itself. When tissue is damaged or strained, it can result in significant pain and swelling. While the pain from a major accident could last for an extended period of time, you may not immediately notice it. This is due to the adrenaline released in moments of stress, like a car accident, which can mask the symptoms. However, in the hours or days following the crash, you can expect the pain and swelling to creep in. Because of these delayed symptoms, it is essential to seek medical treatment even if you feel fine.