Low blood pressure pregnancy

Anyone else struggling with low blood pressure? This is my second pregnancy and like clockwork 13weeks it has started again. Everyday my blood pressure drops multiple times to around 74/40 and I feel like fainting, seeing stars and so tired. Does anyone have any tips other than eating more salt and drinking all these things didn’t work for me the first time and this time either. Last pregnancy was hell I had this until the end and couldn’t do anything or go out of my house because of the fainting.