8 weeks

Laura
So I'm 8 weeks today (according to this app) and I've been feeling very sluggish.   My first prenatal appointment is the 27th and I've been anxious to ask my OB if all these symptoms in feeling are normal. For example there's been times where I'm fine and then I suddenly start feeling faint...to the point where all I see is black.   I have no pain or bleeding.
Anyone else experience this?