Hi Sarah,

Low BP is usually why you would be getting dizzy, especially if it occurs when you go from sitting/lying to standing (called postural hypotension), however inner ear infections can also make you dizzy.

there are possibly other reasons that are pg related that i am unaware of, but these are the two main ones that spring to my mind as a nurse (but not a midwife)

Good thing that you have an appoint tomorrow as you can ask then, but most likly pg hormones relaxing and vasodilating the vessels causing lower BP.

HTH