It hurts more to exhale than the inhale. I was thinking also perhaps a bruised muscle or something muscular. I do not have visible signs of bruising. Either way, having seen this link, perhaps I should add that I do not get pneumonia to the request. I'm going to see how it is in a couple of days before I see a doctor. This is not unbearable pain, nor the "oh my gosh, that just happened to me!?!" feeling of when I fractured my toe.