I Was Lifting Heavy Boulders And Banged My Shin. It

I was lifting heavy boulders and banged my shin. It was tender a few days, but no real pain. It swelled up some the first few days. Now after 3 weeks it still swells up during the day, and I wake up in the morning and the swelling is gone. Is this due to bone bruise and should I put ice on it every few hours?