I am almost 22 weeks pregnant. Yesterday, I was so hungry and could not get full no matter how much I was eating, dosing off from being so tired, irritable, and shaking because I was so hungry (even though I had just ate A LOT.) This morning, I had a severe headache, my ears were ringing, very tired and my vision was VERY foggy to the point of barely being able to see anything and everything was flashing. Thoughts? Has anyone experienced this?