Hi, I understand your concern. In pregnancy, blood volume is increased for fetal circulation. so heart has to over work- this causes palpitation in pregnancy. Apart from this pregnancy hormones/ mothers emotions/stress /indigestion/ anemia are other factors which contribute to palpitations. Your anxiety attacks must be increasing them! To manage it- - Understand the physiological cause behind it. - have healthy life style with nutritious diet with proteins/iron/calcium/vitamins . Moderate regular exercises in form of walking/yoga./ meditation Be occupied in the activities you enjoy, have 8 hours sound sleep, Be positive . - Get your self checked up by aphysician to exclude any heart problem-and be tension free. Thanks.