I am 29 weeks pregnant and have a painful burning sensation under my left breast, next to my left ribs. not sure if its the muscles tearing or nerves? its also sore if i push down on the spot. not sure if this is normal?

Pain under breast: At 29 weeks of pregnancy, it is common to bump into a chair or bureau because of balance loss, and such might bruise your rib, causing soreness on compression. Usually this is not connected to the pregnancy itself, but later in pregnancy, rib pain can be caused by kicking or position change by the fetus. See your OB physician if this continues.