Feeling faint and dizzy

Anyone else experience this? I am 4 weeks and 3 days pregnant and did not remember this happening with my first .

I know it's normal and is just because of the extra blood flow making your veins wider and then your blood pressure drops and you feel faint. However it is driving me crazy!!!!

I work in a fast paced environment. And the past week or so I get very out of breath and then feel faint and dizzy. I keep having to sit down and rest and today I had to leave 2 hours early from work. I don't know how to cope with it. It's so frustrating feeling like I cannot do as much, walk fast ect. Even cleaning my house I put on a load of dishes and I'm getting out of breathe or feeling faint. Please someone relate to me. I feel alone in this.