Pregnant women chest tightness shortness of breath difficulty breathing panic what's going on

Pregnant women appear chest distress, shortness of breath and palpitation performance, first of all, because the fetal volume increases, the uterus increases compression to the diaphragm caused by breathing difficulties and chest distress; secondly, it may be because the maternal affected by emotion leads to palpitation and shortness of breath performance; in addition, it may also be caused by maternal heart problems.