HI There.I bumped my forehead about a month ago after a fall. The skin did not break but was bruised and yellow for about a week. It was not terribly painful - moderately painful. Now, after one month, I still have a 4-inch long bump where I hit my head. I can see it more so in certain lighting. Will this go away on its own?? I have massaged it and its slightly painful when pressure is applied. I have also applied castor oil at night. Thank you so much.JR