Pregnant ; diarrhea, stomache cramps , cant keep milk down?

okay the tightness in the chest is probably due to the baby pushing on your organs sometimes this makes you breathless but if you have been told you may have pre eclampsia then call the midwife NOW you cant take any risks with this as it can be very dangerous the stomach cramps if they are low down may indicate the baby is heading down into the placenta as i am 32 weeks and my baby has been very low down since week 30 and in measuring 34 weeks but just call to get checked so that you don't worry