I have been getting dizzy since early pregnancy. first they told me it was just because of hormones.…

I have been getting dizzy since early pregnancy. first they told me it was just because of hormones. and it kept happening so then they told me it was from getting up to fast but it happens even when I'm sitting or laying down...they told me to eat more frequently but I have been doing that the past couple days and it doesn't seem to be getting better...anyone have this & find out they have low blood sugar or something?? should I be worried??