I Had A Bike Accident 5 Days Ago As I

I had a bike accident 5 days ago as I was hit by a car. Landed on my left side and immediately had a large area of swelling on my upper thigh/ lower hip area. I have iced religiously for 5 days and the swelling has gone down a little bit but good sized lump remains, pain has subsided quite a bit. Still no bruising in this area. Had x-rays and no broken bones. Should I be concerned by this swollen area remaining with no bruises?