Punched in ribs 4 weeks ago... am I healing well or experiencing a new problem?

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4 weeks ago, I was punched in my rib on my left side, just below the breast area. I went to the ER on the same day that it happened, the doc took x-rays and said it appears negative, that nothing is fractured and that it's just very bruised. He prescribed me like 800mg motrin and told me to give it at least 6-8 weeks to completely heal. Healing-wise, there has been some progress. On the day it first happened, I was walking like a zombie cuz I had to be careful how I moved. But now, 4 weeks later, I have no problem walking. I can also lay on it in bed with little to no discomfort. There's times when I forget that it's even there. My only symptoms that I'm experiencing right now are some localized tenderness in a few small areas, nothing painful though it's just "there". There's also some stiffness or tightness on left ribcage area, and there's a little boney area below the breast that feels like a tender knot or like a piece of bone is sticking up but when you look at my skin, there's no abnormal shape. I would hope that's not a piece of bone sticking out or anything. My wife told me it's all apart of the healing process and that I shouldn't worry though. I know you guys are not doctors, but just thought I would ask for your opinion or insight into my progress and what I'm currently experiencing.