I recently started exercising again. Two nights ago I began doing crunches and sit ups. The next morning I developed a constant pain below my sternum/stomach area. (between where rib cages come together) It feels tight, like someone is squeezing where my esophagus and stomach connects. The pain is amplified when I sit really straight or sneeze/laugh. I have also been belching more than normal.
Could this have caused a hiatal hernia?
note: I have pre-existing GERD problems that are under control. (off nexium)