When i poke a finger on my upper body anywhere between chest and abdomen it hurts.also,i usually have chest pain while sneezing. i am 24+. what is it?

Intercostal muscle.: Sounds like either intercostal muscle strain (strain of muscles b/w the ribs) or costochondritis (CC), inflammation of the cartilage where the ribs connect with the sternum. When u sneeze, the muscles between the ribs contract to help force air out; if strained, then sneezing makes the muscles sore. Pressing on the muscles has the same effect. Alternately, CC is rare but gives tenderness to touch.