Dizzy / fainting spells during pregnancy

I am 11 weeks pregnant with my 5th. I know being dizzy is normal sometimes due to hormones changing etc. but this morning at 4am I was lying down trying to fall back to sleep and I was so dizzy the room was spinning felt like I was falling and everything was black. It’s currently 12:12pm and I have been having the same feeling all morning. I ate something sweet. I’ve ate a meal and drank water nothing had helped. Was doing my oldest daughters hair for school and had a spell and I fell into the wall had to tell for my SO to help me up and had him drive them to school. I’ve had spells were I have to grab something bc it suddenly gets black and I go numb.

I go to the dr tomorrow morning but any idea why this is happening ?? I’m hydrated lots of water and some body armors here and there. I don’t go without eating when I’m hungry. ????