when you are say it to your girl/boyfriend,and if you are quarreled,you can say"wo de xin hen teng(我的心很疼)"or "wo de xin hen shou shang(我的心很受伤)".we usually use hen(很) before teng(疼).
if we talk with friends,something is wrong,we could say"wo zhen de hen xin tong(我真的很心痛)" or "ni zhe me shuo rang wo zhen de hen xin han(你这么说让我真的很心寒)“.