Hi, I hit my knee on a table really hard 4 days ago, it didn’t have any visible bruising, but is very tinder to the touch, and is very painful when I straighten and bend it. When it’s sitting still i don’t feel much discomfort. When I rub my patella I feel a grindy feeling, I have been icing it trying to make it better but have been avoiding seeing my doctor because I don’t want to waste anyone’s time for a bruised knee. I was wondering if these symptoms sound worry some or if I should just keep icing it.