I got punched in the face 5 months ago by a 18 years old girl. I didn't get the police get involved. It was my first time involved with something like this and I was scared. I didnt know what to do. I needed to get surgery so the girl's mum paid a small amount of money for my surgery. However, I've been experiencing side effects such as breathing problems, plus emotional instability and depression. I would like to know if I can still sue her for personal injury even though it's been 5 months since the incident?