I was in a car accident and i have no external injuries not even a scratch, except for a bruise on my left thigh on to the side. The bruise dint show till the evening of the accident and was probably a quarter size and pink. Now after 6 days the bruise is in dark pinkish color and i feel the surface area increased. But there is no Pain or swelling. There was swelling on the nite of the accident and I took acetaminophen 500mg and swelling and pain went away by morning. There is pain when I press the area of hit other than that, I can walk without the slightest notice of pain also stretch. Do I need a Doctor?