I was in a soccer game collision about 10 days ago, knocked the wind out of me pretty seriously and I initially thought I had cracked/bruised ribs. Even as soon as the next day, pressure at the point of injury (high abdominal, right side – even w/ heart) produced minimal if any pain.
However, sitting up and (especially!) sneezing reward me w/ sharp, very localized pain.
Haven’t gone to a doc b/c, as far as I know, you can’t do much for abdominal tears/fractures/bruises besides just let them heal.