About Four Months Ago I Was Playing A High School

About four months ago I was playing a high school football game. The helmet I was wearing had a an air leak on the pads protecting the front part of my head. A few weeks pass by and I begin to notice that my head is looking progressively worse, and realize my helmet is not functioning properly. So I switched my helmet out and it was much better! My headaches stopped, swelling went down, and everything was better. So the football season is now over, I still can notice a slight bit of swelling, nothing too noticeable but still a concern to me. It also is very faintly bruised, very difficult to notice. I have not really had any head aches, no impairments in vision, nor have I had any other major problems. My primary concern is will my head go back to its normal physical appearance, or will I constantly live with a slight swelling?